title: Death of the 'stepping-stone' hypothesis and the 'gateway' model? Comments on Morral et al.
authors.affiliation: Mental Hygiene and Epidemiology, Bloomberg School of Public Health, The Johns Hopkins University, Baltimore, MD 21205, USA. janthony@jhsph.edu
authors.forename: James C
authors.initials: JC
authors.lastname: Anthony
mesh_terms: D000293:Adolescent; D002644:Chickenpox / Q000150:complications; D006562:Herpes Zoster / Q000150:complications; D006801:Humans; D002189:Marijuana Abuse / Q000150:complications* / Q000517:prevention & control; D008960:Models, Psychological; D009437:Neuralgia / Q000821:virology; D011050:Policy Making; D019966:Substance-Related Disorders / Q000209:etiology / Q000517:prevention & control