The Role of Aspartate Aminotransferase to Platelet Ratio Index as a Non-Invasive Predictor of Variceal Etiology of Upper Gastrointestinal Bleeding. J Lumbini Med Coll [Internet]. 2020 Sep. 20 [cited 2026 Apr. 16];8(2):206-11. Available from: https://mail.jlmc.edu.np/index.php/JLMC/article/view/376