[1] Pediat Cardiac Res Labs, Dept Pediat, Hershey, PA USA
[2] Univ Michigan, Med Ctr, Extracorporeal Life Support Org, Ann Arbor, MI USA
[3] Univ Kentucky, Dept Surg, Lexington, KY USA
[4] Penn State Hershey Childrens Hosp, Penn State Coll Med, Penn State Milton S Hershey Med Ctr, Dept Surg & Bioengn, Hershey, PA USA