Therapeutic benefit of balneotherapy and hydrotherapy in the management of fibromyalgia syndrome: a qualitative systematic review and meta-analysis of randomized controlled trials.

Naumann J, Sadaghiani C
Arthritis Res Ther. 2014 Jul 7;16(4):R141. doi: 10.1186/ar4603

https://www.ncbi.nlm.nih.gov/pubmed/25000940