Rabiya Noor, Wajeeha Zia, Mashar Hayyat, Iqra Ishriaq, Alveena Shakoor, Mehwish Khalid, “Effects of Inspiratory Muscles Trainer in Pulmonary Rehabilitation Program among COPD Patients”, Pakistan Journal of Medical & Health Sciences, vol. 16, no. 12, p. 122, Jan. 2023.