[1] NHS Blood & Transplant, Nottingham, England
[2] Maastricht Univ, Med Ctr, Dept Surg, Maastricht, Netherlands
[3] NHS Blood & Transplant, Birmingham, W Midlands, England
[4] Maastricht Univ, Med Ctr, Dept Intens Care Med, Maastricht, Netherlands
[5] Clin San Carlos Hosp, Donor Transplant Coordinat Unit, Madrid, Spain
[6] Org Nacl Trasplantes, Madrid, Spain