title: Thanks and best wishes to Alan D. Waggoner.
authors.forename: Kenneth D
authors.initials: KD
authors.lastname: Horton
mesh_terms: D002309:Cardiology / Q000266:history*; D004452:Echocardiography / Q000266:history*; D049673:History, 20th Century; D049674:History, 21st Century; D014481:United States