title: Past and present.
authors.affiliation: Vanderbilt University School of Medicine; Nashville, TN 37232-4700, USA. keith.wrenn@mcmail.vanderbilt.edu
authors.forename: Keith
authors.initials: K
authors.lastname: Wrenn
mesh_terms: D004502:Education, Medical, Continuing / Q000592:standards*; D004562:Electrocardiography; D006801:Humans; D010820:Physicians / Q000523:psychology*