title: Chronic arsenic poisoning in opium addicts in Sri Lanka.
mesh_terms: D000328:Adult; D020261:Arsenic Poisoning; D002908:Chronic Disease; D004340:Drug Contamination; D006801:Humans; D008297:Male; D008875:Middle Aged; D009892:Opium; D010859:Pigmentation Disorders / Q000139:chemically induced; D013188:Sri Lanka; D019966:Substance-Related Disorders / Q000150:complications*
chemical_list: D009892:Opium