“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” (2026) Pakistan Journal of Medical & Cardiological Review, 5(2), pp. 6501–6517. doi:10.66021/pakmcr1381.