title: Power sources for implantable cardiac pacemakers.
mesh_terms: D004560:Electricity; D004582:Electronics, Medical; D006801:Humans; D010138:Pacemaker, Artificial / Q000009:adverse effects / Q000295:instrumentation*; D011005:Plutonium; D011399:Promethium; D013814:Thermal Conductivity; D014316:Tritium
chemical_list: D014316:Tritium; D011005:Plutonium; D011399:Promethium