Marzoug, O.A. 2021. Laparoscopic versus open surgical approach of cholecystectomy in patients with symptomatic cholelithiasis: a systematic review of comparative trials. International Journal of Scientific Reports. 7, 3 (Feb. 2021), 167–174. DOI:https://doi.org/10.18203/issn.2454-2156.IntJSciRep20210545.