A "free clinic" patient population and drug use patterns.
D001290:Attitude; D001463:Barbiturates; D002140:California; D002188:Cannabis; D003153:Community Health Services / Q000706:statistics & numerical data; D004522:Educational Status; D004651:Employment; D005260:Female; D006213:Hallucinogens; D006801:Humans; D008297:Male; D009892:Opium; D012945:Social Values; D012959:Socioeconomic Factors; D019966:Substance-Related Disorders
D001463:Barbiturates; D006213:Hallucinogens; D009892:Opium