Malison, T., Permsuwan , U., Chuveera , P. and Nirunsittirat, A. (2021) “Parents’ Willingness to Invest for Children’s Oral Health”, Khon Kaen University Dental Journal, 24(2), pp. 71–81. available at: https://he01.tci-thaijo.org/index.php/KDJ/article/view/246078 (accessed: 16 September 2026).