1. Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
2. Department of Otolaryngology, University Medical Centre Mannheim, Mannheim, Germany
3. Department of Plastic, Hand- and Reconstructive Microsurgery, Handtrauma- and Replantation Center, BG Unfallklinik Frankfurt am Main gGmbH, Affiliated Hospital of Goethe University Frankfurt, Frankfurt, Germany