title: Cigarette smoking: interactions with alcohol, opiates, and marijuana.
mesh_terms: D002188:Cannabis; D004347:Drug Interactions; D000431:Ethanol / Q000008:administration & dosage*; D009294:Narcotics / Q000008:administration & dosage*; D012907:Smoking
chemical_list: D009294:Narcotics; D000431:Ethanol