Affiliation: | a Professor and Chair, Department of Oral Anatomy and Physiology and TMD, School of Stomatology, Fourth Military Medical University, Xi'an, China b Lecturer, Department of Oral Anatomy and Physiology and TMD, School of Stomatology, Fourth Military Medical University, Xi'an, China c Senior Technican, Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China d Associate Professor, Department of Biological and Materials Sciences, Division of Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, Mich; Visiting Professor, Department of Oral Anatomy and Physiology and TMD, School of Stomatology, Fourth Military Medical University, Xi'an, China |