1. Department of Obstetrics, Paulista School of Medicine; Federal University of São Paulo (EPM-UNIFESP); São Paulo SP Brazil
2. Department of Obstetrics and Gynecology, Ribeirão Preto Medical School; University of São Paulo (DGO-FMRP-USP); Ribeirão Preto-SP Brazil
3. Department of Perinatal Medicine and Obstetrics and Gynecology, Royal Women's Hospital; University of Melbourne, Melbourne; Melbourne Victoria Australia