1. Department of Hand, Plastic and Reconstructive Surgery, Microsurgery—Burn Center, BG Trauma Center Ludwigshafen/Rhine, University Heidelberg, Ludwig-Guttmann-Str. 13, 67071 Ludwigshafen, Germany
2. Department of Plastic, Hand and Reconstructive Microsurgery, Hand Trauma and Replantation Center (FESSH), BG Unfallklinik Frankfurt am Main gGmbH, Academic Teaching Hospital of Goethe-University of Frankfurt, Friedberger Landstrasse 430, 60389 Frankfurt am Main, Germany