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Facilitating physical activity and reducing symptoms in patients with knee osteoarthritis: study protocol of a randomized controlled trial to test a theory-based PrevOP-psychological adherence program (PrevOP-PAP).
Knoll N, Hohl DH, Motter S, Keller J, Lange D, Felsenberg D, Martus P, Ertel W, Schwarzer R. Knoll N, et al. Among authors: keller j. BMC Musculoskelet Disord. 2018 Jul 18;19(1):221. doi: 10.1186/s12891-018-2158-8. BMC Musculoskelet Disord. 2018. PMID: 30021578 Free PMC article. Clinical Trial.
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