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. Pjmcr [Internet]. 2026 Jun. 30 [cited 2026 Jul. 12];5(2):6975-8. Available from: https://pakjmcr.com/index.php/1/article/view/1502