[1] Univ Pittsburgh, Med Ctr, Thomas E Starzl Transplantat Inst, Dept Pathol,Div Transplantat Pathol, Pittsburgh, PA 15213 USA
[2] Univ Pittsburgh, Med Ctr, Thomas E Starzl Transplantat Inst, Dept Surg, Pittsburgh, PA 15213 USA
[3] Childrens Hosp Pittsburgh, Dept Pathol, Pittsburgh, PA 15213 USA