Poonthawe, P., Junprasert, S. ., Toonsiri, C. ., Rattanagreethakul , S. ., Intolo, S. and Luecha, T. (2023) “Factors Influencing COVID-19 Preventive Behavior among Older Adults in Eastern Thailand”, NU Journal of Nursing and Health Sciences, 18(1), pp. 36–52. available at: https://he01.tci-thaijo.org/index.php/NurseNu/article/view/263093 (accessed: 7 December 2025).