[1] Shizuoka Childrens Hosp, Dept Pediat Cardiol, Shizuoka, Japan
[2] Univ Tokyo, Dept Pediat, Tokyo, Japan
[3] Univ Tokyo, Sch Publ Hlth, Dept Biostat, Tokyo, Japan
[4] Tokyo Womens Med Univ, Dept Pediat Cardiol, Tokyo, Japan
[5] Tokyo Womens Med Univ, Dept Adult Congenital Cardiol, Tokyo, Japan
[6] Tokyo Womens Med Univ, Inst Gastroenterol, Dept Internal Med, Tokyo, Japan
[7] Natl Ctr Child Hlth & Dev, Dept Cardiol, Tokyo, Japan
[8] Okayama Univ, Dept Pediat Cardiol, Okayama, Japan
[9] Hokkaido Univ, Dept Pediat, Sapporo, Hokkaido, Japan
[10] Univ Toyama, Dept Pediat, Toyama, Japan
[11] Nagano Childrens Hosp, Dept Pediat Cardiol, Nagano, Japan
[12] Sakakibara Heart Inst, Dept Pediat Cardiol, Tokyo, Japan
[13] Tokyo Univ Sci, Dept Informat & Comp Technol, Fac Engn, Tokyo, Japan
[14] Int Univ Hlth & Welf, Mita Hosp, Dept Pediat, Tokyo, Japan
[15] Japan Res Promot Soc Cardiovasc Dis, Sakakibara Heart Inst Clin, Tokyo, Japan