@misc{indiciae47f03ab89dd5, title = {Ventricular septal defect noted by two-dimensional echocardiography.}, author = {R S Meltzer and J Schwartz and J French and R L Popp}, year = {1979}, doi = {10.1378/chest.76.4.455}, url = {https://pubmed.ncbi.nlm.nih.gov/477436/}, note = {Source identifier: 477436} }