The effectiveness of hydrotherapy in the management of fibromyalgia syndrome: a systematic review.

McVeigh JG1, McGaughey H, Hall M, Kane P
Rheumatol Int. 2008 Dec;29(2):119-30. doi: 10.1007/s00296-008-0674-9. Epub 2008 Aug 27

https://www.ncbi.nlm.nih.gov/pubmed/18751709