Tariq, Muhammad, Muhammad Hafeez, Fizza Fatima, Umair Khalid, Shahnawaz Ateeque, Azka Zainab, and Maha Zainab. 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): 402-08. https://pafmj.org/PAFMJ/article/view/4199.