title: A lesson on ephemeral nodes and equanimity.
authors.affiliation: Department of Medicine, Quillen-Dishner College of Medicine, East Tennessee State University, Johnson City.
authors.forename: S L
authors.initials: SL
authors.lastname: Berk
mesh_terms: D049672:History, 19th Century; D049673:History, 20th Century; D007388:Internal Medicine / Q000266:history*