1. Animal Welfare Academy of the German Animal Welfare Federation, Neubiberg, Germany
2. Cellasys GmbH, Kronburg, Germany
3. Department of Biology, Lund University, Lund, Sweden
4. Institute of Transfusion Medicine and Immunology, German Red Cross Blood Donor Service Baden–Württemberg–Hessen, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany