title: Wow, how time flies.
authors.forename: William B
authors.initials: WB
authors.lastname: Risk
mesh_terms: D006665:History of Dentistry; D049672:History, 19th Century; D049673:History, 20th Century; D049674:History, 21st Century; D007196:Indiana; D012953:Societies, Dental / Q000266:history*