Effect of modified Qing Long Bai Wei needling on the levels of IL-1β, IL-6 and INF-α in synovial fluid of knee osteoarthritis patients - Deng, Jie; Fei, Lan-bo; Tang, Yi-han; Huang, Wei; Chen, Xia (Journal of Acupuncture and Tuina Science: Acupuncture, Moxibustion and Therapeutic Massage, 2018)