title: Source and significance. Midsystolic clicks and late systolic murmurs.
mesh_terms: D004562:Electrocardiography; D006326:Heart Auscultation; D006331:Heart Diseases / Q000503:physiopathology; D006801:Humans; D008382:Marfan Syndrome / Q000473:pathology / Q000503:physiopathology; D008722:Methods; D008943:Mitral Valve / Q000473:pathology; D010701:Phonocardiography