Naruemit, J., T. Suwannakul, K. Lapwararak, W. Weraarchakul, M. Wannasarnmetha, and N. Klai-on. “Incidence and Risk Factors for Postoperative Pneumonia (POP) after Major Oral and Maxillofacial Surgery”. Khon Kaen University Dental Journal, vol. 27, no. 1, Apr. 2024, pp. 69-78, https://he01.tci-thaijo.org/index.php/KDJ/article/view/266723.