title: Letter: Toxic reactions due to flea collars.
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000139:chemically induced*; D002415:Cats; D004006:Dichlorvos / Q000633:toxicity*; D004478:Ectoparasitic Infestations / Q000662:veterinary*; D005423:Siphonaptera
chemical_list: D004006:Dichlorvos