Keawsengsai A, Suchamvang K, Nanasilp P. Effect of Iyengar Yoga Exercise on Severity of Knee Osteoarthritis Among the Older Persons. Nursing Journal CMU [internet]. 2020 Mar. 25 [cited 2026 Jan. 7];47(1):175-84. available from: https://he02.tci-thaijo.org/index.php/cmunursing/article/view/240743