title: Diagnostic value of P wave in lead V in chronic obstructive pulmonary disease.
mesh_terms: D016275:Atrial Function; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008168:Lung / Q000502:physiology; D008173:Lung Diseases, Obstructive / Q000175:diagnosis* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged