1. Department of Surgery; Division of Plastic Surgery; Brigham and Women's Hospital; Harvard Medical School; Boston MA
2. Department of Hand-, Plastic and Reconstructive Surgery; Burn Trauma Center; BG Trauma Center Ludwigshafen; University of Heidelberg; Ludwigshafen Germany
3. Department of Plastic Surgery; BG University Hospital Bergmannsheil; Bochum Germany
4. University Hospital for Plastic; Reconstructive and Aesthetic Surgery; Innsbruck Austria