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Pacemaker - Mayo Clinic
Pacemaker: Types, Procedure, Precautions, and More - Healthline
Pacemaker | American Heart Association
How Does a Pacemaker Work? - Verywell Health
Pacemaker (for the Heart): Surgery, Types & What It Is - Cleveland …
Artificial cardiac pacemaker - Wikipedia
Pacemakers - What Are Pacemakers? | NHLBI, NIH
Heart Disease and Pacemakers - WebMD
Pacemaker - Professional Heart Daily | American Heart Association