1 Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, Hand and Plastic Surgery, University Heidelberg, Germany.
2 Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, Hand and Plastic Surgery, University Heidelberg, Germany. Electronic address: thomas.kremer@bgu-ludwigshafen.de.