[1] Hannover Med Sch, Div Nephrol & Hypertens, D-3000 Hannover, Germany
[2] Hannover Med Sch, Div Pulmonol, D-3000 Hannover, Germany
[3] Hannover Med Sch, Div Hematol Hemostasis Oncol & Stem Cell Transpla, D-3000 Hannover, Germany
[4] Hannover Med Sch, Div Gastroenterol Hepatol & Endocrinol, D-3000 Hannover, Germany
[5] Hannover Med Sch, Dept Pathol, D-3000 Hannover, Germany
[6] Hannover Med Sch, Dept Cardiac Thorac Transplantat & Vasc Surg, D-3000 Hannover, Germany
[7] Hannover Med Sch, Dept Gen Visceral & Transplantat Surg, D-3000 Hannover, Germany
[8] Hannover Med Sch, Dept Pediat Nephrol, Integrated Res & Treatment Ctr Transplantat IFB T, D-3000 Hannover, Germany