RT Article T1 Correlates of Occasional Cigarette and Marijuana Use: Are Teens Harm Reducing? JF Addictive behaviors VO 24 IS 2 SP 251 OP 266 A1 Resnicow, Ken A1 Drucker, Ernest A1 Harrison, Lana A1 Smith, Matt A2 Drucker, Ernest A2 Harrison, Lana A2 Smith, Matt LA English YR 1999 UL https://krimdok.uni-tuebingen.de/Record/1912494116 DO 10.1016/S0306-4603(98)00059-8