1. Department of Orthopaedics, Kunming Municipal Hospital of Traditional Chinese Medicine, The Third Affiliated Hospital of Yunnan University of Chinese Medicine, Kunming, Yunnan 650599, P.R. China
2. The Fifth Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
3. The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510407, P.R. China
4. Department of Orthopaedics, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510407, P.R. China