[1] Nationwide Childrens Hosp, Ctr Heart, Columbus, OH USA
[2] Cincinnati Childrens Hosp Med Ctr, Inst Heart, Cincinnati, OH 45229 USA
[3] Childrens Hosp & Med Ctr, Omaha, NE USA
[4] Parent Project Muscular Dystrophy, Hackensack, NJ USA
[5] Monroe Carell Jr Childrens Hosp, Nashville, TN USA