chankunasuka, rungfah, Chintanawat, R. and Juntasopeepan, P. (2025) “Relationship Between Anxiety of COVID-19 and Sleep Quality of Older Persons”, NU Journal of Nursing and Health Sciences, 19(3), pp. 116–131. available at: https://he01.tci-thaijo.org/index.php/NurseNu/article/view/272389 (accessed: 30 September 2026).