1. Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
2. Department of Biology, Washington University in St Louis, St Louis, Missouri, USA.
3. Department of Hand-, Plastic and Reconstructive Surgery, Microsurgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany.
4. Department of Plastic Surgery, Peking University Shenzhen Hospital, Shenzhen, China.