title: John Hay and the earliest description of type II second-degree atrioventricular block.
authors.affiliation: Broward General Hospital, Fort Lauderdale, Florida, USA. ssbarold@aol.com
authors.forename: S S
authors.initials: SS
authors.lastname: Barold
authors.forename: B
authors.initials: B
authors.lastname: Lüderitz
mesh_terms: D004562:Electrocardiography / Q000266:history; D004739:England; D006327:Heart Block / Q000145:classification / Q000175:diagnosis / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans