he efficacy of topical gel prepared using Lake Urmia mud in patients with knee osteoarthritis

Mahboob N1, Sousan K, Shirzad A, Amir G, Mohammad V, Reza M, Mansour VA, Hadi V
J Altern Complement Med. 2009 Nov;15(11):1239-42. doi: 10.1089/acm.2009.0304

https://www.ncbi.nlm.nih.gov/pubmed/19922256?dopt=Abstract