Muhammad Ashir Rehman Malik, Subayyal Iftikhar, Shahid Sarwar, Maheera Khalid, Komal Munir, and Umrah Khan, “Comparative Effects of Inspiratory Muscle Training vs Expiratory Muscle Training Along with Aerobic Interval Training on Functional Performance and Fatigue Level in COPD Patients”, JHWCR, p. e204, May 2025, doi: 10.61919/zy8c8a53.