1. Andréa Tenório Correia da Silva is with the Primary Care Research Center, Faculty of Medicine Santa Marcelina, São Paulo, Brazil. Franco Mascayano, Gonzalo Martínez-Alés, Maria Francesca Moro, and Ezra Susser are with the Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY. Linda Valeri is with the Department of Biostatistics, Mailman School of Public Health, Columbia University. Martim Elviro de Medeiros Jr is with the Primary Care Research Center, Faculty of...