No abstract available
MeSH terms
- Adult
- Aged
- Arrhythmias, Cardiac / physiopathology
- Cardiac Catheterization
- Electrocardiography
- Heart Atria / physiopathology
- Heart Block / physiopathology*
- Heart Conduction System / physiopathology
- Humans
- Male
- Methods
- Middle Aged
- Sinoatrial Node / physiology
- Sinoatrial Node / physiopathology*