title: An alternative model is feasible, but the gateway hypothesis has not been invalidated: comments on Morral et al.
authors.affiliation: Department of Psychiatry, Washington University School of Medicine, St Louis, MO 63110, USA. mlynskey@matlock.wustl.edu
authors.forename: Michael
authors.initials: M
authors.lastname: Lynskey
mesh_terms: D006801:Humans; D002189:Marijuana Abuse / Q000150:complications* / Q000523:psychology; D008960:Models, Psychological; D019966:Substance-Related Disorders / Q000209:etiology