K. Panda, S. K. Bhoi, and A. Saxena, “EVALUATION OF LAPAROSCOPIC CHOLECYSTECTOMY DIFFICULTY DURING THE COVID-19 PANDEMIC USING EXTERNALLY VALIDATED PREDICTION MODELS: A RETROSPECTIVE COHORT STUDY”., SJHR-Africa, vol. 5, no. 6, p. 6, Jun. 2024, doi: 10.51168/sjhrafrica.v5i6.1257.