Ozkan A, Ozsivri K, Algin A, Ozdemir S. Can the blood urea nitrogen to serum albumin ratio predict a prolonged hospital stay in patients with acute cholecystitis?. Ann Med Res . 2023;30(8):914-919. Accessed September 15, 2026. http://www.annalsmedres.org/index.php/aomr/article/view/4493