1. Center of Orthopedic Surgery; The Orthopedics Oncology Institute of Chinese PLA, The Affiliated Tangdu Hospital, Fourth Military Medical University, Xi'an; Shaanxi China
2. The General Hospital of Shenyang Military Region; Department of Ultrasound Diagnosis Shenyang; China
3. Department of Health Services; School of Preventive Medicine; Fourth Military Medical University; Xi'an China
4. Department of Oral Histology and Pathology; Stomatological Hospital of the Fourth Military Medical University; Xi'an China