1. Department of Orthopedics, First School of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250014, P.R. China
2. Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, P.R. China
3. Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250014, P.R. China