'Gateway effects': insights from economics are needed.
Kenkel
Donald S
DS
Department of Policy Analysis and Management, Cornell University, Ithaca, NY 14853, USA. dsk10@cornell.edu
Mathios
Alan D
AD
D000293:Adolescent; D000328:Adult; D006801:Humans; D002189:Marijuana Abuse / Q000191:economics* / Q000523:psychology; D008960:Models, Psychological; D019966:Substance-Related Disorders / Q000191:economics / Q000523:psychology