preferred_name: electrocardiogram: second degree atrioventricular block with 2:1 conduction 2:1
preferred_name_lc: electrocardiogram: second degree atrioventricular block with 2:1 conduction 2:1
label: electrocardiogram: second degree atrioventricular block with 2:1 conduction 2:1
label_lc: electrocardiogram: second degree atrioventricular block with 2:1 conduction 2:1