1. Department of Obstetrics; Federal University of São Paulo (UNIFESP); São Paulo; SP; Brazil
2. Texas Children's Fetal Center and the Department of Obstetrics and Gynecology; Baylor College of Medicine; Houston; TX; USA
3. Department of Gynecology and Obstetrics, Faculty of Medidine of Ribeirão Preto; São Paulo University (USP); Ribeirão Preto; SP; Brazil