FAMILIAL POLYTOPIC AND POLYMORPHIC EXTRASYSTOLES.
D000293:Adolescent; D005117:Cardiac Complexes, Premature; D002648:Child; D004562:Electrocardiography; D005826:Genetics, Medical; D006801:Humans; D013575:Syncope; D013610:Tachycardia; D013614:Tachycardia, Paroxysmal
ADOLESCENCE; CHILD; ELECTROCARDIOGRAPHY; EXTRASYSTOLE; GENETICS, HUMAN; SYNCOPE; TACHYCARDIA, PAROXYSMAL