@misc{indiciae02fcc96fc164, title = {Letter: Postoperative ventricular septal defect.}, author = {T O Cheng}, year = {1973}, doi = {10.1016/s0002-9149(73)80073-6}, url = {https://pubmed.ncbi.nlm.nih.gov/4744702/}, note = {Source identifier: 4744702} }