[1] Karolinska Inst, Huddinge Hosp, S-10401 Stockholm, Sweden
[2] Sahlgrens Univ Hosp, S-41345 Gothenburg, Sweden
[3] Hosp 12 Octubre, E-28041 Madrid, Spain
[4] Addenbrookes Hosp, Cambridge, England
[5] Hop Necker Enfants Malad, Paris, France
[6] Hop Henri Mondor, F-94010 Creteil, France
[7] Hop Edouard Herriot, Lyon, France
[8] Univ Uppsala Hosp, Uppsala, Sweden
[9] Hosp Clin Barcelona, Barcelona, Spain
[10] Univ Hosp Rangueil, Toulouse, France
[11] Hop Bicetre, Kremlin Bicetre, France
[12] Huddinge Hosp, Dept Transplant Surg, S-14186 Huddinge, Sweden