1. Neonatal Division, Department of Pediatrics, Irmandade da Sant Casa de Misericordia de Sao Paulo, Brazil
2. Neonatal Division, Grupo Santa Joana, Sao Paulo, Brazil
3. Neonatal Division, Hospital NIPO Brasileiro, Sao Paulo, Brazil
4. Department of Pediatrics, Universidade de Vassouras, Rio de Janeiro, Brazil
5. Department of Neonatology, Universidade Federal de Juiz de Fora, Minas Gerais, Brazil
6. Department of Pediatrics, Neonatal Division, Hospital Israelita Albert Einstein, Sao Paulo, Brazil
7. Department of Pediatrics, Neonatal Division, McGill University Health Center, Montreal, Quebec, Canada