1. Department of Obstetrics; Paulista School of Medicine - Federal University of São Paulo (EPM-UNIFESP); São Paulo Brazil
2. Department of Obstetrics and Gynecology, Prenatal Diagnostic Center; Guastalla Civil Hospital; AUSL Reggio Emilia Italy
3. Department of Obstetrics and Gynecology; Baylor College of Medicine and Texas Children's Hospital Pavilion for Women; Houston TX USA
4. Department of Obstetrics and Gynecology; Ribeirão Preto School of Medicine - São Paulo University (FMRP-USP); Ribeirão Preto Brazil