The choice of intoxicant among the Chinese.
D000428:Alcohol Drinking; D000437:Alcoholism / Q000453:epidemiology*; D002681:China; D005006:Ethnicity; D005190:Family; D006801:Humans; D009892:Opium; D019966:Substance-Related Disorders / Q000453:epidemiology*
D009892:Opium