title: I recently received a letter from my cardiologist, and among other diagnoses listed was "sick sinus syndrome." What does this mean?
authors.forename: Gary S
authors.initials: GS
authors.lastname: Francis
mesh_terms: D006801:Humans; D012804:Sick Sinus Syndrome / Q000175:diagnosis* / Q000503:physiopathology / Q000628:therapy; D012849:Sinoatrial Node / Q000502:physiology