Kamkhiew R, Srifa S. Biopsychosocial Factors Associated with Frailty among Older Adults in the Service Area of a Primary Care Unit in Nonthaburi Province. NJPH (วารสาร พ.ส.) [internet]. 2026 Aug. 29 [cited 2026 Sep. 17];36(2):95-110. available from: https://he02.tci-thaijo.org/index.php/tnaph/article/view/281155