title: [The esophageal electrocardiogram in the study of pulmonary P waves].
mesh_terms: D000368:Aged; D001991:Bronchitis / Q000150:complications; D006332:Cardiomegaly / Q000175:diagnosis; D004562:Electrocardiography; D004947:Esophagus; D006325:Heart Atria; D006331:Heart Diseases / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011660:Pulmonary Heart Disease
vernacular_title: L'elettrocardiogramma esofageo nello studio delle P polmonari.