front |1 |2 |3 |4 |5 |6 |7 |8 |9 |10 |11 |12 |13 |14 |15 |16 |17 |18 |19 |20 |review

All the data used in this study are available in Tables 1-3. The 33 total (11 * 3) refers to the 6-16 year old populations of Sabinas, Progreso and Poznan boys and girls.