Ahmed MU, Ahad MA, Alim M, Ekram AS, Masum QAA, Tanu S, et al. Etiology of Upper Gastrointestinal Haemorrhage in a Teaching Hospital. TAJ: J of Teachers Assoc [Internet]. 2009 Sep. 3 [cited 2025 Sep. 15];21(1):53-7. Available from: https://www.banglajol.info/index.php/TAJ/article/view/3220