@misc{indiciaec89675136231, title = {Penicillin and the marked decrease in morbidity and mortality from rheumatic fever in the United States.}, author = {B F Massell and C G Chute and A M Walker and G S Kurland}, year = {1988}, doi = {10.1056/nejm198802043180504}, url = {https://pubmed.ncbi.nlm.nih.gov/3336421/}, note = {Source identifier: 3336421} }