@misc{indiciaec398f2860202, title = {Pulmonary valve insufficiency: malignant or benign?}, author = {H P Gutgesell}, year = {1992}, doi = {10.1016/0735-1097(92)90155-g}, url = {https://pubmed.ncbi.nlm.nih.gov/1607521/}, note = {Source identifier: 1607521} }