Institution: | 1. Fetal Echocardiography Laboratory, Department of Pediatric Cardiology of the 2nd Chair of Pediatrics, Medical University of Lodz, Lodz, Poland;2. Department for Diagnosis and Prevention of Congenital Malformations, Chair of Embryology and Morphology, Polish Mother's Memorial Hospital, Medical University of Lodz, Lodz, Poland;3. Department of Cardiosurgery, Polish Mother's Memorial Hospital, Lodz, Poland |