@misc{indiciae8c3d3c71b42a, title = {Pacemaker syndrome in activity-responsive VVI pacing.}, author = {H P Liebert and S O'Donoghue and W F Tullner and E V Platia}, year = {1989}, doi = {10.1016/0002-9149(89)90671-1}, url = {https://pubmed.ncbi.nlm.nih.gov/2741806/}, note = {Source identifier: 2741806} }