title: Effect of freezer storage on alkyl phosphate metabolites in urine.
mesh_terms: D004355:Drug Stability; D005615:Freezing; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D009787:Occupational Medicine; D009943:Organophosphorus Compounds / Q000652:urine*; D013997:Time Factors; D014021:Tissue Preservation / Q000379:methods
chemical_list: D009943:Organophosphorus Compounds