title: Revisiting the past for a look toward future research: A final editorial.
authors.forename: Thomas
authors.initials: T
authors.lastname: McLellan
mesh_terms: D035843:Biomedical Research / Q000639:trends; D006801:Humans; D011643:Publishing / Q000639:trends*; D019966:Substance-Related Disorders / Q000175:diagnosis / Q000453:epidemiology / Q000628:therapy