Media type: E-Article Title: Vagal tone, significance of electrophysiologic findings and clinical course in symptomatic sinus node dysfunction Contributor: Thormann, Jochen; Schwarz, Franz; Ensslen, Roland; Sesto, Michael imprint: Elsevier BV, 1978 Published in: American Heart Journal Language: English DOI: 10.1016/0002-8703(78)90502-1 ISSN: 0002-8703 Keywords: Cardiology and Cardiovascular Medicine Origination: Footnote: