[1] Minneapolis Med Res Fdn Inc, Sci Registry Transplant Recipients, Minneapolis, MN USA
[2] Mayo Clin, Div Gastroenterol & Hepatol, Rochester, MN USA
[3] Univ Washington, Dept Pediat, Seattle, WA 98195 USA
[4] St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USA
[5] Organ Procurement & Transplantat Network, Richmond, VA USA
[6] United Network Organ Sharing, Richmond, VA USA