Tangcharoen C, Sangsuttiwongsa K, Thammajaksila N, Damrongrungruang T. Recurrent Oral Aphthous Ulcer: Case Report . Khon Kaen Dent J [internet]. 2022 Jul. 11 [cited 2026 Sep. 13];25(2):102-1. available from: https://he01.tci-thaijo.org/index.php/KDJ/article/view/247803