title: DEA physician registration numbers: a need to know.
authors.forename: J R
authors.initials: JR
authors.lastname: Cooper
mesh_terms: D016303:Clinical Pharmacy Information Systems / Q000331:legislation & jurisprudence*; D011307:Drug Prescriptions; D004335:Drug and Narcotic Control / Q000331:legislation & jurisprudence*; D007343:Insurance Carriers; D014481:United States