“Obesity-Driven Exacerbation of Obstructive Sleep Apnea Severity in COPD: A Cross-Sectional Polysomnographic Study from Pakistan. Body Mass Index and Neck Circumference As Independent Predictors of Apnea Severity in the COPD–OSA Overlap”. 2026. Pakistan Journal of Medical & Cardiological Review 4 (4): 2701-11. https://doi.org/10.5281/zenodo.21460047.