Hsiao, H C Heart rate variability in patients with atrioventricular block. [electronic resource] - Zhonghua yi xue za zhi = Chinese medical journal; Free China ed Aug 1997 - 81-5 p. digital Publication Type: Journal Article ISSN: 0578-1337 Subjects--Topical Terms: ElectrocardiographyHeart Block--physiopathologyHeart RateHumans