@misc{indiciae1dc393d1e54c, title = {DOUBLE A-V NODAL RHYTHM.}, author = {K CHUNG and T J WALSH and E MASSIE}, year = {1964}, doi = {10.1536/ihj.5.171}, url = {https://pubmed.ncbi.nlm.nih.gov/14151190/}, note = {Source identifier: 14151190} }