title: Letter: Erroneous blood pesticide levels due to sample containers with PCBs.
mesh_terms: D000925:Anticoagulants; D001713:Biphenyl Compounds; D001800:Blood Specimen Collection / Q000295:instrumentation*; D003634:DDT / Q000097:blood*; D004340:Drug Contamination; D006801:Humans; D006843:Hydrocarbons, Chlorinated
chemical_list: D000925:Anticoagulants; D001713:Biphenyl Compounds; D006843:Hydrocarbons, Chlorinated; D003634:DDT