Sermsathanasawadi R, Suttinont C, Chinprasatsak S, Luangjaru S. An Epidemiological Study of Upper Gastrointestinal Bleeding at Department of Medicine, Maharat Nakhon Ratchasima Hospital. MNRHJ [internet]. 2024 Sep. 26 [cited 2025 Jun. 10];32(2):S21-S27. available from: https://he04.tci-thaijo.org/index.php/MNRHJ/article/view/1913