[1] Nippon Med Sch, Dept Pediat, Tokyo, Japan
[2] Natl Cerebral & Cardiovasc Ctr, Dept Cardiovasc Surg, Suita, Osaka, Japan
[3] Nihon Univ, Dept Pediat & Child Hlth, Sch Med, Tokyo, Japan
[4] Toho Univ, Omori Med Ctr, Dept Pediat, Tokyo, Japan
[5] Mie Univ, Dept Pediat, Grad Sch Med, Tsu, Mie, Japan
[6] Tokyo Metropolitan Childrens Med Ctr, Dept Cardiol, Tokyo, Japan
[7] Saitama Med Univ, Dept Cardiovasc Surg, Int Med Ctr, Saitama, Japan
[8] Gifu Univ, Grad Sch Med, Dept Cardiol & Respirol, Gifu, Japan
[9] Mt Fuji Shizuoka Childrens Hosp, Dept Cardiovasc Surg, Shizuoka, Japan
[10] Kurume Univ, Dept Pediat & Child Hlth, Sch Med, Kurume, Fukuoka, Japan
[11] Wakayama Med Univ, Dept Pediat, Wakayama, Japan
[12] Toho Univ, Dept Pathol, Ohashi Med Ctr, Tokyo, Japan
[13] Natl Cerebral & Cardiovasc Ctr, Dept Pediat Cardiol, Suita, Osaka, Japan
[14] Fukuoka Sanno Hosp, Cardiovasc Ctr, Fukuoka, Japan
[15] Tokyo Womens Med Univ, Dept Pediat, Yachiyo Med Ctr, Tokyo, Japan
[16] Kyote Prefectural Univ Med, Grad Sch Med Sci, Kyoto, Japan
[17] Natl Ctr Child Hlth & Dev, Clin Res Ctr, Dept Management & Strategy, Tokyo, Japan
[18] Chiba Univ, Dept Publ Hlth, Grad Sch Med, Chiba, Japan
[19] Uji Tokushukai Med Ctr, Pediat Cardiol & Kawasaki Dis Ctr, Uji, Japan
[20] Kyoto Univ, Dept Cardiovasc Med, Grad Sch Med, Kyoto, Japan
[21] Natl Cerebral & Cardiovasc Ctr, Tokyo, Japan
[22] Japan Cardiovasc Res Fdn, Tokyo, Japan
[23] Nippon Med Sch, Tokyo, Japan
[24] Kitasato Univ, Pediat Cardiol & Intens Care, Sch Med, Tokyo, Japan