ลีละยุทธโยธิน จ. THE EFFECTIVENESS OF CONSTIPATION PREVENTION PROGRAM FOR HOSPITALIZED ELDERLY IN PATIENTS UNDERGOING TOTAL KNEE ARTHROPLASTY. VNURSE [internet]. 2018 Aug. 12 [cited 2026 Oct. 3];18(1):1-11. available from: https://he02.tci-thaijo.org/index.php/vnj/article/view/139769