1. Department of Obstetrics, Escola Paulista de Medicina – Federal University of São Paulo, São Paulo, Brazil;
2. Fetal Medicine Division, Hospital e Maternidade Santa Joana, São Paulo, Brazil;
3. Institute of Tropical Medicine, University of Sao Paulo, Sao Paulo, Brazil;
4. Department of Obstetrics and Gynecology- Weil Cornell Medicine, New York, USA;
5. Department of Obstetrics and Gynecology, University of Texas Medical Branch at Galveston, Texas, USA;
6. Department of Neurosurgery, Escola Paulista de Medicina, Federal University of São Paulo, São Paulo, Brazil;
7. Department of Pathology, Escola Paulista de Medicina - Federal University of São Paulo, São Paulo, Brazil