Evidence does not favor marijuana gateway effects over a common-factor interpretation of drug use initiation: responses to Anthony, Kenkel & Mathios and Lynskey.
Morral
Andrew R
AR
Drug Policy Research Center, RAND, Arlington, VA 22202, USA. morral@rand.org
McCafrey
Daniel F
DF
Paddock
Susan M
SM
D000293:Adolescent; D019317:Evidence-Based Medicine; D006801:Humans; D002189:Marijuana Abuse / Q000150:complications* / Q000523:psychology; D008960:Models, Psychological; D019966:Substance-Related Disorders / Q000209:etiology / Q000523:psychology