Muhammad Hanif1 , Naveed Ahmed Brohi2 , Safdar Ali Jamali3 , Muhammad Azhar4 , Mir Tahir Hussain Talpur5 , Mukhtyar Ahmed Abro6. “PULMONARY HYPERTENSION IN PATIENTS WITH IDIOPATHIC PULMONARY FIBROSIS BY USING ECHO CARDIOGRAPHY”. Journal of Peoples University of Medical &Amp; Health Sciences Nawabshah. (JPUMHS), vol. 12, no. 4, Dec. 2022, pp. 21-26, http://121.52.155.46/index.php/ojs/article/view/664.