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在中国的河南省， 疟疾的控制是保健专家们最关心的问题。
幻灯片显示在这个例子中每个人看病的费用比预防的费用高出了 100 倍。
http://www.pitt.edu/~super1/lecture/lec5501/008.htm
Professor Xi-Li Liu, TDR/WHO Project Principal Investigator, Henan Provincial Institute of Parasitic Diseases, China |