title: Commentary.
authors.affiliation: National Institute on Drug Abuse, Baltimore, MD. mhuestis@intra.nida.nih.gov.
authors.forename: Marilyn A
authors.initials: MA
authors.lastname: Huestis
mesh_terms: D005260:Female; D006801:Humans; D010146:Pain / Q000188:drug therapy* / Q000652:urine*; D019966:Substance-Related Disorders / Q000175:diagnosis* / Q000652:urine*