Panda K, Bhoi SK, Saxena A. EVALUATION OF LAPAROSCOPIC CHOLECYSTECTOMY DIFFICULTY DURING THE COVID-19 PANDEMIC USING EXTERNALLY VALIDATED PREDICTION MODELS: A RETROSPECTIVE COHORT STUDY. SJHR-Africa [Internet]. 2024 Jun. 30 [cited 2026 Sep. 14];5(6):6. Available from: https://www.sjhrafrica.org.sjhresearchafrica.org/index.php/public-html/article/view/1257