[1] Diakonie Klinikum Stuttgart, Dept Internal Med, Stuttgart, Germany
[2] Univ Ulm, Dept Internal Med 3, Ulm, Germany
[3] German Red Cross Blood Transfus Serv Baden Wurtte, Ulm, Germany
[4] Univ Hosp Ulm, Inst Clin Transfus Med & Immunogenet Ulm, Ulm, Germany
[5] Heidelberg Univ, Dept Internal Med 5, Heidelberg, Germany