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Pacemaker: Types, Procedure, Precautions, and More - Healthline
Artificial cardiac pacemaker - Wikipedia
Pacemaker - Mayo Clinic
Pacemaker | American Heart Association
Pacemaker (for the Heart): Surgery, Types & What It Is - Cleveland Clinic
How Does a Pacemaker Work? - Verywell Health
Cardiac Pacemaker > Fact Sheets > Yale Medicine
Cardiac pacemaker - Wikipedia
Artificial Pacemakers - Heart and Blood Vessel Disorders
Living With Your Pacemaker | American Heart Association