title: Pericardial changes and left ventricular function in ankylosing spondylitis.
mesh_terms: D000328:Adult; D004452:Echocardiography; D006321:Heart / Q000503:physiopathology*; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D008875:Middle Aged; D010496:Pericardium / Q000473:pathology*; D013167:Spondylitis, Ankylosing / Q000473:pathology* / Q000503:physiopathology