title: [Observation of vectorcardiographic P loop changes in chronic cor pulmonale (author's transl)].
mesh_terms: D001991:Bronchitis / Q000503:physiopathology; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011660:Pulmonary Heart Disease / Q000503:physiopathology*; D014672:Vectorcardiography