Aurora Villar Chamorro MD Consultant Obstetrics & Gynecology Director Dep Obstetrics & Gynecology Hosp San Bartolome, Lima-Peru

Flor d Maria Carvallo Ñiquen MD Consultant Obstetrics & Gynecology Director Dep Human Reproduction Hosp San Bartolome, Lima-Peru Associated Prof Universidad Nacional Mayor de San Marcos

Luz Maria Obando Porras MD Consultant Obstetrics & Gynecology , Senior Lecturer Universidad Ricado Palma & Research Team Leader Hosp San Bartolome, Lima-Peru

Obstetric Ultrasound Research Team

Dr. Santiago Cabrera Ramos Dr. David Cornejo Falcón Dr. Francisco Esteves Osso Dr Guillermo Vásquez Gómez Dr. Juan Ramirez Cabrera Dr Edy VeraLoyola Dr Edgard  Sánchez Ponce Dr Jhony Ramirez cárdenas Dr Wilfredo Galán Fiestas

Nery Romero MD, Consultant Histopathology Director Dep Pathology Hosp San Bartolome, Lima-Peru

Luz