2001, Combined Spa-Exercise Therapy Is Effective in Patients With Ankylosing Spondylitis: A Randomized Controlled Trial

Van Tubergen A, Landewe R, van der Heijde D, Hidding A, Wolter N, Ascher M, Fakenbach A, et al

Arthritis Care & Research 2001;45:430-438

https://www.ncbi.nlm.nih.gov/pubmed/11642642