'Sudden-onset' murmur in an 18-year-old.
D000293:Adolescent; D003937:Diagnosis, Differential; D004697:Endocarditis, Bacterial / Q000175:diagnosis / Q000473:pathology*; D005260:Female; D006192:Haemophilus Infections / Q000175:diagnosis / Q000473:pathology*; D006326:Heart Auscultation; D006337:Heart Murmurs; D006801:Humans