title: Studies on the notches of P waves in mitral stenosis by means of the high-speed and magnified electrocardiograms.
mesh_terms: D000293:Adolescent; D000328:Adult; D001794:Blood Pressure; D004562:Electrocardiography / Q000379:methods*; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000503:physiopathology; D008946:Mitral Valve Stenosis / Q000503:physiopathology*; D011651:Pulmonary Artery / Q000503:physiopathology