A history of the development of cardiology as a medical specialty.
D002309:Cardiology / Q000266:history*; D004562:Electrocardiography / Q000266:history; D005060:Europe; D006666:History of Medicine; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D012955:Societies, Medical / Q000266:history; D013038:Specialization; D006113:United Kingdom; D014481:United States