title: [An analysis of dynamic electrocardiogram in patients with sinus bradycardia and sick sinus syndrome].
authors.forename: Y H
authors.initials: YH
authors.lastname: Zhu
mesh_terms: D001919:Bradycardia / Q000503:physiopathology*; D015716:Electrocardiography, Ambulatory; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012804:Sick Sinus Syndrome / Q000503:physiopathology*