1. Department of Pediatrics, Hospital Universitário Antônio Pedro, Universidade Federal Fluminense, Niterói
2. Department of Pediatrics, Universidade Federal do Rio de Janeiro, Instituto de Puericultura e Pediatria Martagão Gesteira
3. Department of Pediatrics, Dasa Complexo Hospitalar de Niterói
4. Department of Pediatrics, Hospital Municipal Jesus
5. Department of Pediatrics, Hospital Municipal Getúlio Vargas Filho, Niterói
6. Department of Pediatrics, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro
7. Hospital Prontobaby
8. Centro Pediátrico da Lagoa, Rio de Janeiro, Brazil
9. Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada