Jin, X., Jones, G., Cicuttini, F., Wluka, A., Zhu, Z., Han, W., Antony, B., Wang, X., Winzenberg, T., Blizzard, L., Ding, C. Effect of Vitamin D supplementation on Tibial cartilage volume and knee pain among patients with symptomatic knee osteoarthritis: A randomized clinical trial. JAMA - Journal of the American Medical Association 2016; 10: 1005-1013