Effect of vitamin D supplementation on pain and physical function in patients with knee osteoarthritis (OA): an OA Trial Bank protocol for a systematic review and individual patient data (IPD) meta-analysis.
Jin X, Antony B, Wang X, Persson MS, McAlindon T, Arden NK, Srivastava S, Srivastava R, Van Middelkoop M, Bierma-Zeinstra SM, Zhang W, Cicuttini F, Ding C. Effect of vitamin D supplementation on pain and physical function in patients with knee osteoarthritis (OA): an OA Trial Bank protocol for a systematic review and individual patient data (IPD) meta-analysis. BMJ Open. 2020 04 23; 10(4):e035302.