[1] Univ Estadual Campinas, Dept Obstet & Gynecol, Campinas, SP, Brazil
[2] Fac Med Jundiai HU FMJ, Jundiai, SP, Brazil
[3] Hosp Clin Porto Alegre, Porto Alegre, RS, Brazil
[4] Maternidade UNIMED UNIMED BH, Belo Horizonte, MG, Brazil
[5] Univ Fed Ceara MEAC UFC, Fortaleza, Ceara, Brazil
[6] Univ Fed Sao Paulo UNIFESP EPM, Sao Paulo, SP, Brazil
[7] Hosp Moinhos Vento HMV, Porto Alegre, RS, Brazil
[8] Hosp Reg Jorge Rossmann Inst Socrates Guanaes, Itanhaem, SP, Brazil
[9] Univ Fed Sao Carlos UFSCAR, Sao Carlos, SP, Brazil
[10] Hosp Estadual Sumare HES, Sumare, SP, Brazil
[11] Univ Fed Minas Gerais HC UFMG, Belo Horizonte, MG, Brazil
[12] Inst Fernandes Figueira IFF Fiocruz, Rio De Janeiro, RJ, Brazil
[13] Univ Estadual Sao Paulo, Fac Med, Botucatu, SP, Brazil
[14] Univ Fed Pernambuco HC UFPE, Recife, PE, Brazil
[15] Maternidade Climerio Oliveira MCO UFBA, Salvador, BA, Brazil
[16] Santa Casa de Misericordia Para, Belem, Para, Brazil