TY - JOUR T1 - San Carlos JF - Journal of Epidemiology and Community Health JO - J Epidemiol Community Health SP - 689 LP - 689 DO - 10.1136/jech.55.10.689a VL - 55 IS - 10 A2 - , Y1 - 2001/10/01 UR - http://jech.bmj.com/content/55/10/689.2.abstract N2 -   Eliseo Pascual, … ER -