Khodkaew, W., S. . Luengpailin, and A. . . Klungthong. “Microbial Air Contamination in Dental Clinics With Different Ventilation Systems”. Khon Kaen University Dental Journal, vol. 27, no. 1, Apr. 2024, pp. 87-96, https://he01.tci-thaijo.org/index.php/KDJ/article/view/267873.