Abstract
The project is related to SAYCARE multicenter study, which will be developed in São Paulo and another six South American cities: Teresina (Brasil), Buenos Aires (Argentina), Santiago (Chile),Montevidéu (Uruguai), Lima (Peru) and Medellín (Colômbia). The study will be carried out in children and adolescents from 3 to 17 years old, divided in three age groups (preschool-children, school-chi…