@misc{indiciae232c878a27fc, title = {Intrapericardial synchronous pacemaker lead.}, author = {N P Smyth and E F Hirsch and I N Brecher and R J Betancourt}, year = {1967}, url = {https://pubmed.ncbi.nlm.nih.gov/5232907/}, note = {Source identifier: 5232907} }