Singsomran, Naluemol, and Rujira Duangsong. 2022. “Relationships between Personal Characteristics, Protection Motivation, Preventive Behaviors and Risk Factors of Upper Gastro-intestinal Bleeding among Patients in Khon Kaen Hospital”. Thai Journal of Health Education 45 (2):138-51. https://he01.tci-thaijo.org/index.php/muhed/article/view/260872.