Wongkeaw S, Panuthai sirirat, Nanasilp P. Factors Associated with Physical Activity Among Older Persons with Knee Osteoarthritis Stage III. Nursing Journal CMU [internet]. 2023 Mar. 31 [cited 2026 Sep. 11];50(1):216-29. available from: https://he02.tci-thaijo.org/index.php/cmunursing/article/view/262153