Diab, Doaa G., and Hani I. Taman. 2019. “The Effect of Different Levels of Elevated Intraperitoneal Pressure on the Cerebral Perfusion Pressure During Laparoscopic Cholecystectomy”. Anaesthesia, Pain & Intensive Care 23 (1). https://www.apicareonline.com/index.php/APIC/article/view/1044.