Affiliation: | (1) Department of Pediatric Cardiology, Sakakibara Heart Institute, 5-4 Yoyogi 2-chome Shibuya-ku, 151 Tokyo, Japan;(2) Department of Cardiac Surgery, Sakakibara Heart Institute, 5-4 Yoyogi 2-chome Shibuya-ku, 151 Tokyo, Japan;(3) Pediatric Department, National Medical Center Hospital, Tokyo, Japan |