1. Department of Periodontics and Dental Hygiene; University of Texas Health Science Center at Houston; Houston TX USA
2. Oral and Maxillofacial Surgery; Department of Stomatology; Taipei Veterans General Hospital and School of Dentistry; National Yang-Ming University; Taipei Taiwan
3. Department of Oral and Maxillofacial Surgery; Massachusetts General Hospital and Harvard School of Dental Medicine; Boston MA USA
4. Department of Applied Oral Sciences; The Forsyth Institute; Cambridge MA USA