Rahman, Md Mushfiqur, et al. “Use of Proseal Laryngeal Mask Airway (PLMA) and Endotracheal Tube (ETT) in Cardiac Compromise Patients With LVEF <45% Undergoing Laparoscopic Cholecystectomy : A Comparison of Hemodynamic Parameters”. Journal of the Bangladesh Society of Anaesthesiologists, vol. 31, no. 1, Feb. 2018, pp. 38-44, doi:10.3329/jbsa.v31i1.66256.