Waqar, H., Ali, W., Faryal, U., Fatima, S., Hassan, B. and Jalal, S.F. 2025. Impact of Problem-Based Learning (PBL) on Knowledge Retention and Clinical Reasoning: A Systematic Review: Impact of PBL on Knowledge Retention and Clinical Reasoning. Pakistan Journal of Health Sciences. 6, 8 (Aug. 2025). DOI:https://doi.org/10.54393/pjhs.v6i8.3474.