Shirale, Vaishali, et al. “Evaluation of Gallbladder Mucosal Changes about the Type of Stones in Patients Undergoing Open Cholecystectomy: A Study of 184 Patients”. Asian Journal of Medical Sciences, vol. 13, no. 4, Apr. 2022, pp. 167-72, https://nepjol.info/index.php/AJMS/article/view/42971.