1. Emergency Department, Instituto Nacional Materno Perinatal, Lima, Peru
2. School of Medicine “San Fernando.” Universidad Nacional Mayor de San Marcos, Lima, Peru
3. Gynecology Oncology and Breast Unit, Department of Gynecology, Instituto Nacional Materno Perinatal, Lima, Peru
4. High-Risk Pregnancy Unit, Department of Obstetrics and Perinatology, Instituto Nacional Materno Perinatal, Lima, Peru