Kanokkarnjana, Pornsiri, Thamonwan Yodkolkij, Putthachat Jaigad, and Jiraporn Sri-on. 2025. “Survey of Barthel Activities of Daily Living, Cognitive Function and Frailty of elderly who obtained service in Faculty of Medicine Vajira Hospital, Bangkok Metropolitan”. Vajira Nursing Journal 27 (1):81-96. https://he02.tci-thaijo.org/index.php/vnj/article/view/273170.