[1] Indiana Univ, Sch Med, Div Thorac & Cardiovasc Surg, Indianapolis, IN USA
[2] Indiana Univ Hlth, Riley Hosp Children, Sect Congenital Cardiac Surg, Indianapolis, IN USA
[3] Indiana Univ, Sch Med, Dept Pediat, Div Crit Care, Indianapolis, IN 46202 USA
[4] Jikei Univ, Sch Med, Dept Cardiac Surg, Tokyo, Japan
[5] Univ Tsukuba, Dept Surg, Fac Med, Ibaraki, Japan