1. Department of Oral Implantology, Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Stomatological Hospital of Xiamen Medical College, Xiamen, Fujian 361008, P.R. China
2. Department of Pain, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 201112, P.R. China
3. Department of Implant Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China