Waithongkam, A. ., P. . Laohapand, and T. . Teparat-Burana. “Patient Accessibility to Supportive Periodontal Therapy and the Occurrence of Recurrent Periodontitis: A Retrospective Study in the Faculty of Dentistry, Mahidol University”. Mahidol Dental Journal, vol. 42, no. 2, June 2022, pp. 109-18, https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/254620.