A RETROSPECTIVE COHORT STUDY OF COVID-19 PANDEMIC IMPACT ON ACADEMIC PERFORMANCE OF FOURTH YEAR MBBS STUDENTS OF SIALKOT MEDICAL COLLEGE. SJMS [Internet]. 2023 Apr. 1 [cited 2024 Nov. 21];1(3):1-13. Available from: https://www.sialjournal.com/index.php/sjms/article/view/12