Completed Prospective Observational Cohort Study of Fetal Atrial Flutter & Supraventricular Tachycardia NCT03376438 Conditions Arrhythmias, Cardiac, Atrial Flutter, Cardiac Conduction System Disease, +29 more Locations Phoenix Children's Hospital — Phoenix, Arizona, United States University of California, San Francisco — San Francisco, California, United States Children's Hospital Colorado — Denver, Colorado, United States Children's National Medical Center — Washington D.C., District of Columbia, United States View all 41 locations View more locations Show fewer locations Loading locations... View Trial Details