Viriyaroj, Vichit. “Predicting outcome of upper gastrointestinal bleeding without endoscopy using the clinical Rockall score and Blatchford”. Journal of Medicine and Health Sciences 18, no. 3 (August 24, 2011): 127–136. accessed October 10, 2026. https://he01.tci-thaijo.org/index.php/jmhs/article/view/59737.