2011, A study on the efficacy of treatment with mud packs and baths with Sillene mineral water (Chianciano Spa Italy) in patients suffering from knee osteoarthritis.

Fraioli A, Serio A, Mennuni G, Ceccarelli F, Petraccia L, Fontana M, Grassi M, Valesini G

Rheumatol Int. 2011 Oct;31(10):1333-40. doi: 10.1007/s00296-010-1475-5

https://www.ncbi.nlm.nih.gov/pubmed/20390281