1. Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.
2. Department of Hand, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Heidelberg, Germany.
3. Clinic of Dermatology and Allergology, University Hospital RWTH Aachen, Aachen, Germany.
4. Department of Surgery, Shriners Hospitals for Children, University of Texas Medical Branch, Galveston, Texas, USA.