Richmond, S., Brown, S., Campion, P., Porter, A., Klaber Moffett, J., Jackson, D., …Taylor, A. (2009). Therapeutic effects of magnetic and copper bracelets in osteoarthritis: A randomised placebo-controlled crossover trial. Complementary Therapies in Medicine, 17(5-6), 249-256. https://doi.org/10.1016/j.ctim.2009.07.002