Protocol for a phase II, multicenter, open-label, randomized controlled trial to compare the efficacy of gamification using Nintendo Switch Ring Fit Adventure game versus standard exercise in the treatment of fibromyalgia. PPCR [Internet]. 2021 Aug. 16 [cited 2024 May 19];7(2):37-43. Available from: https://journal.ppcr.org/index.php/ppcrjournal/article/view/160