Kamkhiew, R., & Srifa, S. (2026). Biopsychosocial Factors Associated with Frailty among Older Adults in the Service Area of a Primary Care Unit in Nonthaburi Province. Nursing Journal of The Ministry of Public Health, 36(2), 95–110. retrieved from https://he02.tci-thaijo.org/index.php/tnaph/article/view/281155