[1] Univ Missouri Kansas City, Sch Med, Kansas City, MO USA
[2] Childrens Mercy Res Inst, Div Hlth Serv & Outcomes Res, Kansas City, MO USA
[3] Childrens Mercy Kansas City, Ward Family Heart Ctr, Kansas City, MO USA
[4] Childrens Natl Heart Inst, Washington, DC USA
[5] Univ Missouri Kansas City, Ward Family Heart Ctr, Sch Med, Childrens Mercy Kansas City, 2401 Gillham Rd, Kansas City, MO 64108 USA