title: Letter: Splitting of second heart sound at mitral area without pulmonary hypertension.
mesh_terms: D000328:Adult; D001794:Blood Pressure; D006328:Cardiac Catheterization; D004562:Electrocardiography; D006326:Heart Auscultation; D006801:Humans; D006976:Hypertension, Pulmonary / Q000503:physiopathology*; D008943:Mitral Valve; D010701:Phonocardiography; D011651:Pulmonary Artery