Institution: | (1) Department of Pediatric Echocardiography, Hospital de Cardiología, Centro Médico Nacional Siglo XXI, IMSS, Av. Cuauhtémoc 330, Col Doctores, México, D.F., 06720 Mexico City, México;(2) Department of Pediatric Cardiology, Hospital de Cardiología Centro Médico Nacional Siglo XXI, IMSS, Av. Cuauhtémoc 330, Col Doctores, México, D.F., 06720 Mexico City, México;(3) Department of Cardiovascular Surgery, Hospital de Cardiología, Centro Médico Nacional Siglo XXI, IMSS, Av. Cuauhtémoc 330, Col Doctores, México, D.F., 01670 Mexico City, México |