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. JPUMHS 2022, 12, 21-26.