title: Clinical and echocardiographic assessment in juvenile-onset spondyloarthropathy.
mesh_terms: D000293:Adolescent; D000328:Adult; D001022:Aortic Valve Insufficiency / Q000209:etiology*; D002648:Child; D004452:Echocardiography; D005260:Female; D006801:Humans; D007592:Joint Diseases / Q000150:complications*; D008297:Male; D008945:Mitral Valve Prolapse / Q000209:etiology*