2026. From Service Burden to Burnout: The Protective Role of Supervisory Support Among Internal Medicine Postgraduate Residents in Punjab Teaching Hospitals A Cross-Sectional Survey Running head: Service burden, supervisory support, and burnout in Punjab Intern. Pakistan Journal of Medical & Cardiological Review. 5, 2 (Jun. 2026), 6501–6517. DOI:https://doi.org/10.66021/pakmcr1381.