"Get high with a little help from my friends": implications of the historical covariation of cannabis use and evenings out.
Schulenberg
John E
JE
O'Malley
Patrick M
PM
D000293:Adolescent; D000294:Adolescent Behavior; D033062:Friends; D006801:Humans; D007398:Interpersonal Relations; D008385:Marijuana Smoking / Q000517:prevention & control / Q000523:psychology*