[ON THE MIGRATING SOURCE OF VENTRICULAR EXCITATION IN FREDERICQ'S SYNDROME].
D004562:Electrocardiography; D006327:Heart Block; D006329:Heart Conduction System; D006352:Heart Ventricles; D006801:Humans
ELECTROCARDIOGRAPHY; HEART BLOCK; HEART CONDUCTION SYSTEM
O MIGRIRUIUSHCHEM ISTOCHNIKE VOZBUZHDENIIA ZHELUDOCHKOV PRI SINDROME FREDERIKA.