TY - GEN AU - Hubbard,R L AU - Bray,R M AU - Craddock,S G AU - Cavanaugh,E R AU - Schlenger,W E AU - Rachal,J V TI - Issues in the assessment of multiple drug use among drug treatment clients SN - 1046-9516 PY - 1986///1203 KW - Alcoholism KW - diagnosis KW - Cocaine KW - Epidemiologic Methods KW - Follow-Up Studies KW - Humans KW - Marijuana Abuse KW - Opioid-Related Disorders KW - Prospective Studies KW - Substance-Related Disorders N1 - Publication Type: Journal Article ER -