1. Resident in Anesthesia, Clinic for Anesthesiology and Critical Care, Christian-Albrechts-University, Kiel, Germany.
2. Staff Anesthesiologist, Clinic for Anesthesiology and Critical Care, Christian-Albrechts-University, Kiel, Germany.
3. Professor and Senior Lecturer, Clinic for Anesthesiology and Critical Care, Christian-Albrechts-University, Kiel, Germany.
4. Head, Red Cross Blood Transfusion Service, Hamburg and Schleswig Holstein, Germany.
5. Professor, Institute of Transfusion Medicine, Christian-Albrechts-University, Kiel, Germany.