1. Department of Oral and Maxillofacial Surgery; Division of Implant Dentistry; Affiliated Stomatology Hospital of Medical School; Nanjing University; Nanjing China
2. Department of Reconstructive Sciences; Center for Regeneration Medicine and Skeletal Development; School of Dental Medicine; University of Connecticut; Farmington CT USA
3. Department of Craniofacial Sciences; Division of Oral and Maxillofacial Surgery; School of Dental Medicine; University of Connecticut; Farmington CT USA