Majeed, Farhan, Ghazanfar Ali, Muhammad Aziz, Hassan Shabbir, Nabeela Farhan, and Haroon Sabir. 2020. “OCCURRENCE OF ASYMPTOMATIC COVID-19 IN EMERGENCY SURGICAL PROCEDURES. MULTICENTER STUDY”. PAFMJ 70 (5), 1283-87. https://pafmj.org/index.php/PAFMJ/article/view/5550.