Affiliation: | 1. Fetal Medicine Center, Fetal Medicine Interest Group GIMEF, Santiago, Chile.;2. Delta–Ultrasound Diagnostic Center for Obstetrics and Gynecology, Madrid, Spain.;3. Medical-Genetics Department, Moscow Regions Research Institute of Obstetrics and Gynecology, Moscow, Russia.;4. Monash Ultrasound for Women, Melbourne, Victoria, Australia. |