title: Letter: Long-term exposure of factory workers to dichlorvos (DDVP) insecticide.
mesh_terms: D000110:Acetylcholinesterase / Q000097:blood; D002802:Cholinesterases / Q000097:blood; D004006:Dichlorvos / Q000633:toxicity*; D004781:Environmental Exposure; D004912:Erythrocytes / Q000201:enzymology; D006801:Humans; D009787:Occupational Medicine; D013223:Statistics as Topic; D013997:Time Factors
chemical_list: D004006:Dichlorvos; D000110:Acetylcholinesterase; D002802:Cholinesterases