Syed Ali Rukh Pirzada, Tafazzul-e-Haque Mahmud, Aflak Rasheed, Ata-ur-Rehman, Masooma Hashmat, Muhammad Ammad Asghar, Mufazzal E Haque Mahmud, Mehreen Kamran. (2019) Assessment of Pulmonary Artery Hypertension in Patients with Limited and Diffuse Systemic Sclerosis, , Volume 25, Issue 3.