[1
]ISNI 0000 0001 0723 2494, GRID grid.411087.b, Department of Obstetrics and Gynecology, School of Medical Sciences, , University of Campinas (UNICAMP), ; Campinas, SP Brazil
[2
]Department of Obstetrics and Gynecology, Jundiaí Medical School, Jundiaí, SP Brazil
[3
]ISNI 0000 0001 0723 2494, GRID grid.411087.b, Unit of Statistics, School of Medical Sciences, University of Campinas (UNICAMP),
; Campinas, Brazil
[4
]ISNI 0000 0001 0723 2494, GRID grid.411087.b, Department of Pediatrics, School of Medical Sciences, , University of Campinas (UNICAMP), ; Campinas, SP Brazil
[5
]ISNI 0000 0001 0514 7202, GRID grid.411249.b, Division of Neonatal Medicine, Escola Paulista de Medicina (EPM), Universidade Federal
de São Paulo (UNIFESP), ; São Paulo, SP Brazil
[6
]ISNI 0000 0004 1937 0722, GRID grid.11899.38, Faculty of Medicine Ribeirão Preto, Universidade de São Paulo, ; São Paulo, Brazil
[7
]Maternity School, Assis Chateaubriand, Fortaleza, Ceará Brazil
[8
]ISNI 0000 0004 0417 6556, GRID grid.419095.0, Instituto de Medicina Integral Prof. Fernando Figueira, ; Recife, Pernambuco Brazil
[9
]ISNI 0000 0001 0670 7996, GRID grid.411227.3, Department of Mother and Child Health, School of Medicine, , Federal University of Pernambuco, ; Recife, Brazil
[10
]Instituto de Saúde Elpidio de Almeida, Campina Grande, Paraíba Brazil
[11
]ISNI 0000 0001 2165 7632, GRID grid.411204.2, Departmanet of Gynecology and Obstetrics, , Federal University of Maranhão (UFMA), ; São Luiz, MA Brazil
[12
]ISNI 0000 0004 0397 5145, GRID grid.411216.1, Federal University of Paraíba, ; João Pessoa, Paraíba Brazil
[13
]ISNI 0000 0001 1941 472X, GRID grid.20736.30, Federal University of Paraná, Curitiba, ; Paraná, Brazil
[14
]ISNI 0000 0004 0372 8259, GRID grid.8399.b, Federal University of Bahia, ; Salvador, Bahia Brazil
[15
]ISNI 0000 0001 2200 7498, GRID grid.8532.c, Federal University of Rio Grande do Sul, ; Porto Alegre, RS Brazil
[16
]ISNI 0000 0001 0723 0931, GRID grid.418068.3, Instituto Fernandes Figueira, ; Rio de Janeiro, RJ Brazil
[17
]ISNI 0000 0001 2188 478X, GRID grid.410543.7, Department of Gynecology and Obstetrics, , São Paulo State University, ; Botucatu, São Paulo Brazil
[18
]ISNI 0000 0001 0514 7202, GRID grid.411249.b, Department of Obstetrics, Paulista School of Medicine, , Federal University of São Paulo (EPM-UNIFESP), ; São Paulo, SP Brazil
[19
]Santa Casa de Limeira Hospital, Limeira, SP Brazil
[20
]Santa Casa de São Carlos Hospital, São Carlos, SP Brazil
[21
]Maternity Casa Maternal Leonor Mendes de Barros, São Paulo, SP Brazil
[22
]Maternity Escola de Vila Nova Cachoeirinha, São Paulo, SP Brazil
[23
]Hospital Estadual de Sumaré, Sumaré, SP Brazil
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