Tariq, M., Hafeez, M., Fatima, F., Khalid, U., Ateeque, S., Zainab, A. and Zainab, M. 2020. THREE-PORT VERSUS FOUR - PORT LAPAROSCOPIC CHOLECYSTECTOMY A TWO YEARS EXPERIENCE AT TWO ARMED FORCES TERTIARY CARE HOSPITALS. Pakistan Armed Forces Medical Journal. 70, 2 (Apr. 2020), 402-08.