Saeed, M. et al. 2025. Comparison of Pulmonary Vascular Resistance Measurements  by  Echocardiography   and Cardiac Catheterization. Pakistan Armed Forces Medical Journal. 75, SUPPL-7 (Nov. 2025), S1099-S1104. DOI:https://doi.org/10.51253/pafmj.v75iSUPPL-7.13464.