Witthayapipopsakul, W., Wanwong, Y., Islam Marshall, A., Chotchoungchatchai, S., Patcharanarumol, W. and Tangcharoensathien, V. (2022) “Effective Coverage and Its Application in the Thai Context”, Journal of Health Systems Research. Nonthaburi, Thailand, 16(1), pp. 112–127. available at: https://he04.tci-thaijo.org/index.php/j_hsr/article/view/3484 (accessed: 17 November 2025).