Institution: | 1. Department of Plastic and Reconstructive Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China;2. Department of Stomatology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China;3. Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Boston, MA 02114, USA;4. Harvard School of Dental Medicine, Boston, MA 02115, USA |