1. Departments of Oral and Craniofacial Implant and Oral and Maxillofacial Surgery; School of Medicine; Ninth People's Hospital Affiliated with Shanghai Jiao Tong University; Shanghai China
2. Department of Dental Implant Centre; Stomatologic Hospital & College; Anhui Medical University; Key Lab. of Oral Diseases Research of Anhui Province; Hefei China
3. Department of Periodontics and Oral Medicine in School of Dentistry; University of Michigan and Michigan Center of Oral Health Research (MCOHR); Ann Arbor MI USA