Wenckebach periods in sino auricular block.
D054537:Atrioventricular Block; D001557:Benzenesulfonates; D006327:Heart Block; D006801:Humans; D008099:Liver
D001557:Benzenesulfonates; C057121:isononanoyl oxybenzene sulfonate
HEART/block; LIVER/anti thyrotoxic factor