1. Department of Osteoarthritis, Jining No. 2 People's Hospital, Jining, Shandong 272049, P.R. China
2. Department of Bone Oncology, Gansu Provincial Hospital of Traditional Chinese Medicine, Lanzhou, Gansu 730050, P.R. China
3. Department of Rheumatology, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
4. Department of Hematology, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China