1 Craniofacial Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Linkou, Taiwan, College of Medicine, Chang Gung University, Linkou, Taiwan.
2 Department of Oral and Maxillofacial Surgery, Vanderbilt Medical Center, Nashville, Tenn.
3 Craniofacial Center, Department of Plastic and Reconstructive Surgery, Taipei Medical University Hospital, Taipei Medical University, Taipei City, Taiwan.