New Lectures

New Lectures

EL RAHAD FIELD RESEARCH CENTRE - CHALLENGING HEALTH PROBLEMS -WESTERN SUDAN December 31, 2002	A LATERAL VIEW OF DIABETES FROM THE CARIBBEAN. Part I Part II December 31, 2002
Epidemiologic Measures of Association December 31, 2002	Balón de Contrapulsación Aórtica (in Spanish) December 31, 2002
Insurance, the Presence of a Medical Home, and the Benefits of Primary Care for Children. Part I Part II December 31, 2002	A Threshold Effect in the Relation of Stressful Life Events and Preterm Delivery December 31, 2002
Genetic screening for sporadic cancers and other diseases of complex etiology December 31, 2002	The Primacy of Primary Care in Health Services Systems December 31, 2002
Metaloproteinasas December 31, 2002	Randomised controlled trials in primary care: case study December 31, 2002
Bartonelosis humana por Bartonella bacilliformis (in Spanish) December 31, 2002	IAM Perioperatorio Incidencia (In Spanish) December 31, 2002
Understanding 11 September (in French) December 31, 2002	Magnesium Discussion pro and con December 31, 2002
Human Bartonellosis caused by Bartonella bacilliformis December 07, 2002	Screening December 31, 2002
THE RISK OF CHEMICAL EXPOSURE IN AGRICULTURE PRACTICES December 07, 2002	Epidemiology of Brucellosis in the Euroasian region and Kazakhstan (In Russian) December 07, 2002
Cohort Studies December 07, 2002	Modern tendencies in evolution of pseudomonodoses (In Russian) December 07, 2002
Genetic Epidemiology (in Russian) Part I Part II Part III December 07, 2002	The “Brain Drain” Phenomenon. Global Mobility of Science and Technology Personnel December 07, 2002
Case-Control Studies December 07, 2002	Intervention Studies December 07, 2002
Myocardial protection December 07, 2002	Forecasting epidemic: Time series modelling December 07, 2002
Asistencia Respiratoria Mecanica (In Spanish) Part I Part II December 07, 2002	MODELING FACTORS INFLUENCING MALARIA INCIDENCE IN MYANMAR December 07, 2002
INVESTIGACION EN ATENCION PRIMARIA DE SALUD (In Spanish). Part I Part II December 07, 2002	Using the Media to develop public communication campaigns December 07, 2002
Overview of Social Determinants of Health. Part I Part II November 14, 2002	Societal Approaches to Understanding. How Income and Income Inequality Affect Health Part I. Part II. November 14, 2002
The e-Learning Paradigm for Health Professionals (In Spanish) November 13, 2002	Epidemiology and Sex(ually Transmitted Diseases): The Basics November 13, 2002
Health Promotion I. Part I Part II November 11, 2002	Early childhood and population health. Part I Part II. November 14, 2002
Clinical Governance. Part I Part II November 11, 2002	Health Promotion II: Controversies and Issues November 11, 2002
Deriving Biological Inferences From Epidemiologic Studies November 11, 2002	Can Agricultural Biotechnology Contribute to Food Security? Part I Part II November 11, 2002
Preschool and School Age Activities: Comparison of Urban and Suburban Populations November 11, 2002	Investigating an Outbreak. Part I Part II November 11, 2002
FIBROMIALGIA . PREVENCION Y TRATAMIENTO (in Spanish) November 11, 2002 revised	Infectious Disease Epidemiology November 11, 2002
Adolescent Health Risk Behavior November 11, 2002	Descriptive Epidemiology November 11, 2002
Sources of Scientific Information in The Web November11, 2002	Bias, Confounding and the Role of Chance. Part I Part II November 11, 2002
From Papyrus to PowerPoint November 11, 2002	Showing Cause, Introduction to Study Design November 11, 2002
MIS (MANAGEMENT INFORMATION SYSTEM) October 31, 2002	Information and Planning. Part I Part II October 31, 2002
Administrative Issues in Outbreak Investigations. Part I PartII October 31, 2002	Adolescent Health October 31, 2002
Risky Behaviors in Adolescence October 31, 2002	Oftalmoloska epidemiologija: Zamagljeni vid (in Croatian) October 31, 2002
INCREASING COMMUNITY CAPACITY AND EMPOWERING COMMUNITIES FOR PROMOTING HEALTH. Part I Part II Part III Part IV October 31, 2002	Introduction to Injury Scoring Systems October 31, 2002
Injury Prevention and Control October 31, 2002	A source of Error in Self-Reports of Pap Test Utilization October 31, 2002
INJURY BIOMECHANICS October 31, 2002	Hand Hygiene: A Look at the New Guideline. Part I Part II Part III October 31, 2002
Social and Leisure Activities in Relation to Dementia October 31, 2002	Fibrinogen in South Asians October 31, 2002
Antioxidant Vitamin Therapy: To 'E' or not to 'E' October 31, 2002	Health Education in Turkey (in Turkish) October 31, 2002
Causation October 31, 2002	Introduction to Cancer Epidemiology. Part I Part II Part III October 31, 2002
Risk Assessment October 31, 2002	Principles of epidemiology October 31, 2002
Nutritional Guidelines for Osteoporosis October 31, 2002	Data Sets and Outcome Measures. Part I Part II Part III October 31, 2002
Diagnostic tests October 31, 2002	SMRs, PMRs and Survival Measures October 31, 2002
Health economics October 31, 2002	Meta-analysis and systematic reviews. Part I Part II October 31, 2002
Effectiveness of therapy. Part I Part II October 31, 2002	Impaired glucose tolerance and undiagnosed diabetes October 31, 2002
Epidemiology of Type 1 Diabetes October 31, 2002	Patterns of contraception in IDDM in the UK October 31, 2002
EVIDENCE BASED MEDICINE. Prognosis October 31, 2002	Drug Interactions. Part I Part II October 31, 2002
Vital Data October 31, 2002	Morbidity data: registries, surveillance October 31, 2002
Accounting for Health 1 October 31, 2002	Accounting for Health 2 October 31, 2002
STATISTICAL ASSOCIATION AND CAUSALITY. Part I Part II October 31, 2002	ISSUES IN OCCUPATIONAL AND ENVIRONMENTAL MEDICINE October 31, 2002
Case-Control Studies October 31, 2002	GLOBAL HEALTH PREPARATION October 31, 2002
Bias and Confounding. Part I Part II October 31, 2002	OCCUPATIONAL HISTORY October 31, 2002
Cohort Studies October 31, 2002	Medical Surveillance October 31, 2002
Randomized Trials October 31, 2002	Social Aspects of Diseases October 31, 2002
Study base and directionality, community surveys October 31, 2002	Congenital malformations and birth weight: a family perspective October 31, 2002
Survival and Life Tables October 31, 2002	International Occupational Health & Safety October 31, 2002
Validity, Reliability, Screening for Disease October 31, 2002	Occupational Cancer. Part I Part II October 31, 2002
Standardized Rates and Ratios, Age/cohort/period Analysis October 31, 2002	The problems of malnutrition in Armenia October 31, 2002
Measures of Disease Frequency October 31, 2002
Population Sampling October 31, 2002	HIV In Mothers and Children. Part I Part II Part III October 31, 2002
Disease Categorization and Classification October 31, 2002	Population dynamics of infectious diseases October 31, 2002
Disease Transmission and Context October 31, 2002	Nature and uses of epidemiology October 31, 2002
The Management of People October 13, 2002	Improving child health in developing countries: the critical role of research October 13, 2002
Data Quality Control October 1, 2002	WHO’s cervical cancer screening programmes: managerial guidelines October 1, 2002
Epidemiological Issues in Determining Whether Benzene Causes Lymphatic Cancer or A Toxicologist’s Defense Against the Pump Handle. Part I Part II October 1, 2002	Health Information Technology and Telecommunication Support in the Eastern Mediterranean Region October 1, 2002
An Overview of Risk Assessment October 1, 2002	An Approach to Management October 1, 2002
Microbial Threats to Health in the United States: Natural and Manmade September 27, 2002	Risk Assessment as a Risk Management Tool October 1, 2002
Interventions in Smoking Cessations. Part I PartII (in Russian) September 27, 2002	Assessment and Communication of Chemical Risks September 27, 2002
Open Source and Global Development in Epidemiology Training September 27, 2002	Epid-Internet-ology. Supercourse September 27, 2002
Archiving the Web: why bother ? September 27, 2002	Chinese Herbal Medicines:The Good, the Bad, and the Ugly September 27, 2002
Ethical issues and cancer screening September 27, 2002	Library of Alexandria Health Supercourse: Sharing PowerPoint Files September 27, 2002
Vitamin D and risk of Type 1 diabetes. September 27, 2002	Validation of predictive regression models September 27, 2002
Supercourse overview (In Russian) (In Spanish) (In Croation) (In Arabic) September 27, 2002	Confounding September 27, 2002
Care of Women with HIV Living in Limited-Resource Settings. Prevention. Part I. Part II. September 27, 2002	Epidemiologic study designs September 27, 2002
L-Arginine, Nitric Oxide and Atherosclerosis September 15, 2002	Clinical epi: Diagnosis I Diagnosis II Diagnosis III September 15, 2002
Understanding Sept.11 (In English) (In Russian) (In Chinese) (In Spanish) (In Turkish) (In Korean) (In Italian) (In Japanese) (In Hindi) September 15, 2002	THE INTEGRAL ASSESSMENT OF BIOTERRORISM THREAT. Episode III. ONE YEAR AFTER. THE CHARACTER OF THREATS AND MAIN THREATS RANKING. September 15, 2002
STUDY PLANNING & DESIGN TO ENHANCE TRANSLATION OF HEALTH BEHAVIOR RESEARCH September 15, 2002	THE MODELING OF SCIENCE. Factors that influence Science. Part I. Part II. September 15, 2002
L-Arginine, Nitric Oxide and Atherosclerosis September 15, 2002	Clinical epi: Diagnosis I Diagnosis II Diagnosis III September 15, 2002
Incidence of cutaneous malignant melanoma in Granada (Spain) 1985-1992 September 15, 2002	Idiopathic Sudden Deafness: risk factors from a case-control study using pooled controls September 15, 2002
Dengue, Aedes aegypti, and Hurricane Reconstruction in The Caribbean and Central America: Prevention and Control Following a Natural Disaster (Lecture number 3 - a series of Dengue lectures) September 15, 2002	COMPETENCIAS EN LA FORMACIÓN DE LOS ESTUDIANTES DE SALUD PÚBLICA. DESAFÍOS PEDAGÓGICOS COMPETENCIAS September 15, 2002
GnRH antagonists in Assisted Conception. Cochrane Systematic Review. Part I. Part II. September 15, 2002	Plasma Concentrations of Carotenoids, Retinol and Tocopherols in Preeclamptic and Normotensive Pregnant Women September 15, 2002
Mother and Child Health in Turkey (in Turkish) August 15, 2002	Health Promotion: An Islamic Perspective August 15, 2002
Maternal and Child Health in Kazakhstan (In Spanish) August 15, 2002	Air Travel. Pleasure or Peril? August 15, 2002
The Economic & Demographic Impact of HIV/AIDS in South Africa August 15, 2002	Disabilities due to Injury in the U.S. Armed Forces August 15, 2002
Motor Vehicle Crashes in Older Drivers August 15, 2002	Health Impact Assessment August 15, 2002
Laparoscopic Ablation for Minimal or Mild Lesions in Endometriosis Associated Subfertility August 15, 2002	Therapeutic Interventions and the Sulfinpyrazone in the PREVENTION OF CARDIAC DEATH AFTER MYOCARDIAL INFARCTION. NEJM 1978 August 15, 2002
Infection Control: Attitudes & behaviors August 15, 2002	Organization & Sustainability August 15, 2002
Prevention & Control of Infections August 15, 2002	Prevention & Control Activities August 15, 2002
Population Growth and the Demographic Transition August 15, 2002	QUESTIONS TO ASK IN PROGNOSTIC STUDIES August 15, 2002
Body Mass Index, Weight Change and Death in an Older Hypertensive Population: The SHEP Study July 30, 2002	Arsenic and Nonmelanoma Skin Cancer in Slovakia July 30, 2002
Audit of Cancer Registrations Notified by National Health Service Central Register in England and Wales July 30, 2002	Corticosteroid Randomisation After Significant Head Injury July 30, 2002
TeleRehabilitation Overview and preliminary Results July 30, 2002	TeleRehabilitation Overview and preliminary Results (In Chinese) July 30, 2002
Toxidromes. Part I. July 28, 2002	Toxidromes. Part II. July 28, 2002
Environmental Exposure Assessment And Biomarkers July 28, 2002	Mental Health and Illness. An Epidemiological Perspective July 28, 2002
Designing a Virtual Operating Room for Operative Interventions under Some Pathologies of Middle Ear. A Case of the Database July 28, 2002	The Protective Effects of Alcoholic Beverages on the Occurrence of Food-Borne Outbreak (In Spanish) July 28, 2002
A Web-based Model to Disseminate “Best Lectures” in Rehabilitation Worldwide July 28, 2002	A Web-based Model to Disseminate “Best Lectures” in Rehabilitation Worldwide (In Chinese) July 28, 2002
A Model for Developing and Prescribing Assistive Technology Devices July 28, 2002	A Model for Developing and Prescribing Assistive Technology Devices (in Chinese) July 28, 2002
DISABILITY AND PUBLIC POLICY IN THE UNITED STATES July 28, 2002	DISABILITY AND PUBLIC POLICY IN THE UNITED STATES (In Chinese) July 28, 2002
A simple method for analyzing and presenting health data. July 28, 2002	Safety education of pedestrian. A systematic review. July 28, 2002
The Epidemiology of Physical Activity-related Musculoskeletal Injuries. Part I. 17 July 2002	The Epidemiology of Physical Activity-related Musculoskeletal Injuries. Part II. 17 July 2002
Mortality Associated with Down Syndrome in the United States, 1983-1997 July 3,2002	Validity and Reliability 10 June 2002
THE INTEGRAL ASSESSMENT OF BIOTERRORISM THREAT. Episode II. OBJECTIVES, METHOD, TASKS 10 June 2002	Understanding Multilevel Analysis. Comic concepts for epidemiologists 10 June 2002
THE INTEGRAL ASSESSMENT OF BIOTERRORISM THREAT. Episode I. Introduction. Part I. 10 June 2002	THE INTEGRAL ASSESSMENT OF BIOTERRORISM THREAT. Episode I. Introduction. Part II. 10 June 2002
Physical Activity and Bone Health during Childhood and Adolescence: Critical Periods for the Prevention of Osteoporosis 10 June 2002	Validity and Reproducibility of Physical Activity Questionnaires 10 June 2002
Communication to Promote Therapeutic Adherence. Part I 10 June 2002	Communication to Promote Therapeutic Adherence. Part II 10 June 2002
THE IMPACTS OF EXPERT SYSTEMS ON HEALTH CARE: ECONOMIC CONSIDERATIONS 10 June 2002	The psychical disorders among children and adolescents in Armenia 10 June 2002
The National and Global Cancer Burden (Part I) (in Arabic) 10 June 2002	The National and Global Cancer Burden (Part II) (in Arabic) 10 June 2002
The National and Global Cancer Burden (English-Arabic) 10 June 2002	Basic Investigation of Outbreaks. Part I 24 May 2002
Health Culture In Muslim World. Part I 24 May 2002	Health Culture In Muslim World. Part II 24 May 2002
Device Related Nosocomial Infection in ICU. Part I 24 May 2002	Device Related Nosocomial Infection in ICU. Part II 24 May 2002
Hospital Epidemiology (in Russian) 24 May 2002	Hospital Epidemiology (in English) 24 May 2002
The Control of Nosocomial Infections (in Russian) 24 May 2002	A Multilevel City Health Profile of Moscow 24 May 2002
Basic Investigation of Outbreaks. Part I(in Russian) 24 May 2002	Basic Investigation of Outbreaks. Part II 24 May 2002
Basic Investigation of Outbreaks. Part II(in Russian) 24 May 2002	Challenges in Providing Evidence for the Effectiveness of Health Promotion 24 May 2002
Chemical Transmission in CNS and Antipsychotic Drugs. Part I 24 May 2002	Chemical Transmission in CNS and Antipsychotic Drugs. Part II 24 May 2002
Family Planning in Turkey (in Turkish) 7 May 2002	Potential Errors In Epidemiologic Studies. Part I 7 May 2002
Impact of Preeclampsia on Birth Outcomes 7 May 2002	Potential Errors In Epidemiologic Studies. Part II 7 May 2002
Evidence-based Noncommunicable Diseases Prevention (In Russian) 7 May 2002	Potential Errors In Epidemiologic Studies. Part III 7 May 2002
Six steps of working up the policy of health promotion and diseases prevention (In Russian) 7 May 2002	Potential Errors In Epidemiologic Studies. Part IV 7 May 2002
Chronic noncommunicable diseases among the population of Russia (in Russian) 7 May 2002	INTERNET: the searching of scientific literature and the using of data bases (in Russian) 7 May 2002
The Main Lessons of International and Russian Experience of Noncommunicable Diseases Prevention (in Russian) 7 May 2002	The Official Statistics Data in Creation of the Prevention Programs (in Russian) 7 May 2002
How to organize and to conduct the population survey for the NCD risk factors (in Russian) 7 May 2002	Analysis, Interpretation and Using of Population Survey Results (In Russian) 7 May 2002
Working up the Policy and the Programs of NCD Prevention (In Russian) 7 May 2002	The Estimation of Needs in NCD Prevention (In Russian) 7 May 2002
Working up the Activity Plan for Realization of Program or Policy (in Russian) 7 May 2002	Evaluation of Diseases Prevention and Health Promotion Programs (in Russian) 7 May 2002
Establishing Preventive Cardiology Programs 2 May 2002	CVD Epidemiology Case Studies 2 May 2002
Study Management. Part I 2 May 2002	Study Management. Part II 2 May 2002
Undernutrition in the old age-costs and treatment implications 2 May 2002	Anthrax II. The sequel. 2 May 2002
Cost-performance analysis of malaria control in Henan Province, China 2 May 2002	Pathogenesis of Veterinary respiratory viruses 24 May 2002
Neural Tube Defects Among Mexican Americans Living on the Texas-Mexico Border: Effects of Folic Acid and Dietary Folate 2 May 2002	The Estimation of Public Health Indexes in Transitional Period (in Russian) 24 May 2002
New Problems Of Environmental Health In Armenia 2 May 2002	Clinically Meaningful Change and Clinical Relevance of the Functional Assessment of Cancer Therapy-Lung: Analysis of ECOG 5592 Data 2 May 2002
Variables 2 May 2002	Getting Your Message Across To Healthcare Specialists: Public Speaking Basics. Part I 2 May 2002
Survival Estimates in Prevalent Cohorts: an Application in Sickle Cell Anemia 2 May 2002	Getting Your Message Across To Healthcare Specialists: Public Speaking Basics. Part II 2 May 2002
COMO HACER LA PRESENTACION ORAL DE UN TRABAJO 2 May 2002	Getting Your Message Across To Healthcare Specialists: Public Speaking Basics. Part III 2 May 2002
Health, Nutrition, and Islam 2 May 2002	Modelling Time Dependent Hazard Ratios in Relative Survival: Application to Colon Cancer 2 May 2002
Occupational Health An exploration of a paradigm 10 April 2002	Validity and Reproducibility of Exposure Measurements: The Method of Triads 10 April 2002
Comments on APPENDIX A "Dissent on Safety Issues" 10 April 2002	Post-combat disorders from the Boer War to the Gulf Conflict: their nature and attribution 10 April 2002
Child Health and Islam 10 April 2002	Fundamentals of Communications for Nurses (in Russian) 10 April 2002
Primary Health Care Center Model (English) 10 April 2002	Prevention of CVD (in Russian) 10 April 2002
The Strengthening of the nurse's role in medical help (in Russian)	Primary Health Care Center Model (Russian) 10 April 2002
Epidemiology of Fear. Part I 10 April 2002	Epidemiology of Fear. Part II 10 April 2002
The Involving of the Public in Primary Health Care (in Russian)	Health in Russia: Internet Application 10 April 2002
CVD Epidemiology-Definitions Risk Assessment Incidence and Trends 10 April 2002	Pathogenesis of Acute Coronary Syndromes 10 April 2002
AIDS Care, Why And How Should Industry Respond? 10 April 2002	HIV/AIDS - Issues For The Workplace 10 April 2002
Expanding Safer Sex Options: Introducing the Female Condom 10 April 2002	Intelligent Data Analysis (IDA) 10 April 2002
Age Dependent Type I Diabetes Pathogenesis 10 April 2002	Enhancing Health Policy Through Epidemiology 10 April 2002
Cardiovascular Risk Factor Overview and Management. Part I 10 April 2002	Cardiovascular Risk Factor Overview and Management. Part II 10 April 2002
Research Study Design and Analysis for Cardiologists 10 April 2002	American Heart Association 10 April 2002
Primary and Secondary Prevention of Cardiovascular Disease 10 April 2002	National Cholesterol Education Program. Part I 10 April 2002
Health Outcomes in Populations Living Close To Landfill Sites 10 April 2002	National Cholesterol Education Program. Part II 10 April 2002
The National and Global Cancer Burden (Part I) 10 April 2002	The National and Global Cancer Burden (Part II) 10 April 2002
Lipids and Cardiovascular Disease Prevention. Part I 10 April 2002	Lipids and Cardiovascular Disease Prevention. Part II 10 April 2002
Diabetes and Cardiovascular Disease. Part I 10 April 2002	Diabetes and Cardiovascular Disease. Part II 10 April 2002
Death as Data: Autopsy and the Death Certificate 10 April 2002	Obesity and CHD 10 April 2002
Physical Activity and Cardiovascular Disease 10 April 2002	Inflammation and CHD. Part I 10 April 2002
Islam and Health: An Introduction 10 April 2002	Inflammation and CHD. Part II 10 April 2002
Strategies for Prevention of Type II Diabetes 10 April 2002	Beta Thalassemia: An Overview 10 April 2002
Surrogate Measures of Atherosclerosis and Implications for Evaluating Cardiovascular Risk . Part I 10 April 2002	Surrogate Measures of Atherosclerosis and Implications for Evaluating Cardiovascular Risk . Part II 10 April 2002
Prevention of Excessive Weight 10 April 2002	Opportunistic Fungal Infections 10 April 2002
Hacking as Warfare. Part I 21 February 2002	A Case-Control Study of Biomechanical and Psychosocial Risk Factors for Occupational Low-Back Pain
Hacking as Warfare. Part II 21 February 2002	The Long Term Care Insurance [Kaigo Hoken] and its Impact on Society and Health Care System in Japan 21 February 2002
The Epidemiology of Smoking in Ukraine: a Cross Sectional Survey Undertaken in 2000 21 February 2002	Self Perceived Health in Ukraine: Results of a Cross Sectional Survey 21 February 2002
New Approaches to Epidemiological Risk Assessment Management (In Russian) 21 February 2002	New Approaches to Epidemiological Risk Assessment Management (In English) 21 February 2002
Sexual Behavior and the Prevalence of Chlamydia trachomatis Infection in Asymptomatic Students in Germany and Spain 21 February 2002	Epidemiologic Challenges In Malignant Hyperthermia (MH) 21 February 2002
Healthlink worldwide 21 February 2002	Amblyopia (in Russian) 21 February 2002
Is the CT Scan important at the 24 Hours in Children with Mild Traumatic Brain Injury? International Multicentre Study 21 February 2002	The health of miners (in Russian) 21 February 2002
Ethical Challenges of the Medical & Healthcare Internet 21 February 2002	Chronic Bronchitis among Miners and its Prophylaxis (in Russian) 21 February 2002
Air Safety and Terrorism 21 February 2002	Mapping Genes for SLE: A Paradigm for Human Disease? 14 January 2002
Anger and Coronary Heart Disease: Epidemiologic Evidence from the Atherosclerosis Risk in Communities (ARIC) Study 14 January 2002	Los Plaguicidas. La salud y el ambiente en los países subdesarrollados. Part II 14 January 2002
Los Plaguicidas. La salud y el ambiente en los países subdesarrollados. Part I 14 January 2002	Caring for the Worker Potentially Exposed to Bloodborne Pathogens. Part I 14 January 2002
Introduction to Environmental Health 14 January 2002	Caring for the Worker Potentially Exposed to Bloodborne Pathogens. Part II 14 January 2002
Prostate Cancer and Smoking 14 January 2002	Perchlorate. The State of the Science Human Studies 14 January 2002
Predictors of Asthma in Young Children. Does Reporting Source Affect Our Conclusions? 14 January 2002	Helping Children Develop Healthy Attitudes Toward Stuttering 14 January 2002
Prevalence of Permanent Childhood Hearing Impairment 14 January 2002	Public Health and the Prisoner. Is There a Problem? 14 January 2002
Epidemiology of infectious disease (Examples from Turkey) (In Turkish) 14 January 2002
Zoonotic Pathogens: An Introduction 14 January 2002	Effectiveness of a State Law Mandating Use of Bicycle Helmets among Children: An Observational Evaluation 14 January 2002