1. RWTH Aachen Technical University, Aachen, Germany Department of Occupational & Social Medicine
2. Medical Commission of the Union Internationale des Associations d’Alpinisme (UIAA MedCom); Department of Sportorthopedics, Klinikum Bamberg, Bamberg, Germany; Department of Trauma Surgery, Friedrich Alexander University Erlangen-Nuremberg, Nuremberg, Germany
3. Medical Commission of the Union Internationale des Associations d’Alpinisme (UIAA MedCom), Bern,Switzerland
4. Medical Commission of the Union Internationale des Associations d’Alpinisme (UIAA MedCom), Bern,Switzerland; University College of London, U.K.
5. Institute of Occupational and Social Medicine, RWTH Aachen University, Aachen, Germany; Medical Commission of the Union Internationale des Association d’Alpinisme (UIAA), Bern, Switzerland