title: [Primary rheumatic carditis with a protracted course. Draft of a methodological report].
mesh_terms: D003937:Diagnosis, Differential; D004562:Electrocardiography; D006801:Humans; D010701:Phonocardiography; D012214:Rheumatic Heart Disease / Q000175:diagnosis*; D013997:Time Factors
vernacular_title: Perichnyĭ revmokardit s zatiazhnym techeniem. Proekt metodicheskogo pis'ma.