1. Department of Hand, Plastic and Reconstructive Surgery; BG Trauma Center, Eberhard-Karls University Tuebingen; Schnarrenbergstr. 95 72076 Tuebingen Germany
2. Deparment of Neuroradiology; Eberhard-Karls University Tuebingen; Otfried-Müller-Straße 10 72076 Tübingen Germany