title: High-performance liquid chromatographic determination of morphine, morphine-3-glucuronide, morphine-6-glucuronide and codeine in biological samples using multi-wavelength forward optical detection: a reply.
authors.affiliation: Department of Toxicology, Forensic Science Laboratory, Rijswijk, Netherlands.
authors.forename: P G
authors.initials: PG
authors.lastname: Zweipfenning
mesh_terms: D003061:Codeine / Q000378:metabolism*; D009020:Morphine / Q000378:metabolism*; D009022:Morphine Derivatives / Q000378:metabolism*; D015203:Reproducibility of Results; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*
chemical_list: D009022:Morphine Derivatives; C035349:morphine-6-glucuronide; D009020:Morphine; C018108:morphine-3-glucuronide; D003061:Codeine