Affiliation: | a Department of Pediatrics, Federal University of São Paulo, São Paulo, Brazil b Department of Pediatrics, Federal University of Rio Grande do Sul, Porto Alegre, Brazil c Department of Pediatrics, University of São Paulo, São Paulo, Brazil d Department of Pediatrics, State University of Campinas, Campinas, Brazil e Department of Pediatrics, São Paulo State University, Botucatu, Brazil f Department of Pediatrics, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil g Neonatal Department, Fernandes Figueira Institute of Oswaldo Cruz Foundation, Rio de Janeiro, Brazil h Department of Pediatrics, University of São Paulo, Ribeirão Preto, Brazil |