1. Department of Hematology and Oncology Medical Faculty Mannheim Heidelberg University MannheimGermany
2. Department of Hematology and Oncology University Hospital Schleswig Holstein KielGermany
3. Institute Springe German Red Cross Blood Service NSTOB SpringeGermany
4. Institute of Transfusion Medicine and Immunology Medical Faculty Mannheim Heidelberg UniversityGerman Red Cross Blood Service Baden‐Württemberg – Hessen MannheimGermany
5. Department of Orthopedic Surgery Diakonissen Hospital MannheimGermany
6. Department of Orthopedic Surgery Medical Faculty Mannheim Heidelberg University MannheimGermany
7. Department of Medical Statistics, Biomathematics and Information Processing Medical Faculty Mannheim Heidelberg University Mannheim Germany