1. Department of Hand-, Plastic and Reconstructive Surgery, Microsurgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, 69120 Ludwigshafen, Germany
2. Division of Plastic Surgery, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
3. Division of Plastic and Reconstructive Surgery, Yale University School of Medicine, New Haven, CT 06520, USA