1. Third Department of Orthopaedics and Traumatology, The Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, 411 Gogoli Street, Nangang District, Harbin 150001, P.R. China
2. President Office, Heilongjiang University of Chinese Medicine, 24 Heping Road, Xiangfang District, Harbin 150040, P.R. China
3. Department of Radiology, The Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, 411 Gogoli Street, Nangang District, Harbin 150001, P.R. China