Kuay, L. K., Mohd Hanafiah, A. N., Cheng, L. S., Ying, C. Y., Azlan Kassim, M. S., Lin, C. Z., Abu Sapian, R., Eliana Musa, N. S., Sanaudi, R. and Yusof, M. P. (2021) “Factors Associated with Asymptomatic COVID-19 Patients in Petaling District, Selangor, Malaysia”, International Journal of Public Health Research, 11(2). Available at: https://spaj.ukm.my/ijphr/index.php/ijphr/article/view/317 (Accessed: 13 July 2025).