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Xie Y, Zhang C, Jiang W, Huang J, Xu L, Pang G, Tang H, Chen R, Yu J, Guo S, Xu F, Wang J. Quadriceps combined with hip abductor strengthening versus quadriceps strengthening in treating knee osteoarthritis: a study protocol for a randomized controlled trial. BMC Musculoskeletal Disorders. 2018 May 15;19(1):147. doi: 10.1186/s12891-018-2041-7. |