1. Division of Feto Maternal Medicine, Department of Obstetric and Gynecology, Mount Sinai Hospital; University of Toronto; Toronto Ontario Canada
2. Division of Feto Maternal Medicine, Department of Obstetric and Gynecology, Sunnybrook Health Science Center; University of Toronto; Toronto Ontario Canada
3. Fetal Cardiac Program, Labatt Family Heart Center; The Hospital for Sick Children; Toronto Ontario Canada