@misc{indiciae0b33fe479eb1, title = {Simulated 2:1 left bundle-branch block. Normalization of the left bundle-branch block pattern by ventricular extrasystoles.}, author = {L SCHAMROTH and E CHESLER}, year = {1962}, doi = {10.1161/01.cir.25.2.395}, url = {https://pubmed.ncbi.nlm.nih.gov/14498017/}, note = {Source identifier: 14498017} }