Khan, Nadim, Munir Ahmad, Zahoor Ahmad, Amjad Khan, and Muzafar-uddin Sadiq. 2013. “SAFETY OF ULTRASONIC DISSECTION VERSUS CONVENTIONAL ELECTROCAUTERY DISSECTION DURING LAPROSCOPIC CHOLECYSTECTOMY IN TERMS OF GALL BLADDER PERFORATION”. Journal of Postgraduate Medical Institute 27 (2). https://www.jpmi.org.pk/index.php/jpmi/article/view/1285.