title: Newer developments in pacemakers.
mesh_terms: D002104:Cadmium; D004560:Electricity; D004566:Electrodes; D004582:Electronics, Medical; D006801:Humans; D008094:Lithium; D008628:Mercury; D009532:Nickel; D010138:Pacemaker, Artificial / Q000145:classification* / Q000295:instrumentation*; D011868:Radioisotopes; D013997:Time Factors; D014173:Transistors, Electronic
chemical_list: D011868:Radioisotopes; D002104:Cadmium; D009532:Nickel; D008094:Lithium; D008628:Mercury