title: Reply to Ruan et al. (2017): Non-medical use of prescription opioids is associated with heroin initiation among US veterans.
authors.affiliation: Department of Epidemiology, Brown School of Public Health, Providence, RI, USA.
authors.forename: Geetanjoli
authors.initials: G
authors.lastname: Banerjee
authors.affiliation: Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT, USA.|Yale Center for Interdisciplinary Research on AIDS, Yale School of Public Health, Yale University, New Haven, CT, USA.
authors.forename: E Jennifer
authors.initials: EJ
authors.lastname: Edelman
authors.affiliation: Yale University, New Haven, CT, USA.|APT Foundation Pain Treatment Services, New Haven, CT, USA.
authors.forename: Declan T
authors.initials: DT
authors.lastname: Barry
authors.affiliation: Pain Research, Informatics, Multi-morbidities and Education (PRIME) Center, VA, Connecticut Healthcare System, West Haven, CT, USA.
authors.forename: William C
authors.initials: WC
authors.lastname: Becker
authors.affiliation: Department of Emergency Medicine, University of California, Davis, Sacramento, CA, USA.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Cerdá
authors.affiliation: Institute for Health, Health Care Policy, and Aging Research, Rutgers University, New Brunswick, NJ, USA.
authors.forename: Stephen
authors.initials: S
authors.lastname: Crystal
authors.affiliation: Yale Center for Interdisciplinary Research on AIDS, Yale School of Public Health, Yale University, New Haven, CT, USA.|Yale Center for Medical Informatics, Yale School of Medicine, New Haven, CT, USA.
authors.forename: Julie R
authors.initials: JR
authors.lastname: Gaither
authors.affiliation: Center for Health Equity Research and Promotion (CHERP) and Mental Illness Research Education and Clinical Center (MIRECC), VA Pittsburgh Healthcare System and University of Pittsburgh, Pittsburgh, PA, USA.
authors.forename: Adam J
authors.initials: AJ
authors.lastname: Gordon
authors.affiliation: VA Connecticut Healthcare System, West Haven, CT, USA.
authors.forename: Kirsha S
authors.initials: KS
authors.lastname: Gordon
authors.affiliation: Pain Research, Informatics, Multi-morbidities and Education (PRIME) Center, VA, Connecticut Healthcare System, West Haven, CT, USA.|Departments of Psychiatry, Neurology and Psychology, Yale University, New Haven, CT, USA.
authors.forename: Robert D
authors.initials: RD
authors.lastname: Kerns
authors.affiliation: Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA.
authors.forename: Silvia S
authors.initials: SS
authors.lastname: Martins
authors.affiliation: Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT, USA.|Yale Center for Interdisciplinary Research on AIDS, Yale School of Public Health, Yale University, New Haven, CT, USA.
authors.forename: David A
authors.initials: DA
authors.lastname: Fiellin
authors.affiliation: Department of Epidemiology, Brown School of Public Health, Providence, RI, USA.
authors.forename: Brandon D L
authors.initials: BD
authors.lastname: Marshall
mesh_terms: D000701:Analgesics, Opioid; D003932:Heroin; D006801:Humans; D009293:Opioid-Related Disorders; D063487:Prescription Drug Misuse; D014728:Veterans
chemical_list: D000701:Analgesics, Opioid; D003932:Heroin
keywords: Epidemiology; NMUPO; heroin; longitudinal study; non-medical use of prescription opioids; veterans