title: [Diagnosis of II degree atrioventricular block by ECG during atrial fibrillation].
authors.forename: B Y
authors.initials: BY
authors.lastname: Qian
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001281:Atrial Fibrillation / Q000150:complications / Q000503:physiopathology*; D015716:Electrocardiography, Ambulatory; D005260:Female; D006327:Heart Block / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged