1. Department of Hand, Plastic and Reconstructive Surgery, BG Trauma Center LudwigshafenUniversity of Heidelberg, Ludwig‐Guttmann‐Str. 13 Ludwigshafen Germany
2. Department of Medical StatisticsUniversity Medicine Mannheim, University of Heidelberg, Theodor‐Kutzer‐Ufer 1 Mannheim Germany
3. Department of Vascular SurgeryLudwigshafen Hospital, Bremser Str. 79 Ludwigshafen Germany