Electrocardiogram of the month. Second degree atrioventricular block with intermittent right plus left anterior branch block.

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@article{Seplveda1969ElectrocardiogramOT, title={Electrocardiogram of the month. Second degree atrioventricular block with intermittent right plus left anterior branch block.}, author={Gonzalo Sep{\'u}lveda and Eduardo Rosselot and Juana Ahumada}, journal={Diseases of the chest}, year={1969}, volume={56 6}, pages={553-4} }