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Zhang JY, Fast DM, Breau AP (February 2003). "Determination of valdecoxib and its metabolites in human urine by automated solid-phase extraction-liquid chromatography-tandem mass spectrometry". Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences. 785 (1): 123–134. doi:10.1016/s1570-0232(02)00863-2. PMID12535845.
Zhang JY, Fast DM, Breau AP (September 2003). "Development and validation of an automated SPE-LC-MS/MS assay for valdecoxib and its hydroxylated metabolite in human plasma". Journal of Pharmaceutical and Biomedical Analysis. 33 (1): 61–72. doi:10.1016/s0731-7085(03)00349-2. PMID12946532.
Werner U, Werner D, Hinz B, Lambrecht C, Brune K (March 2005). "A liquid chromatography-mass spectrometry method for the quantification of both etoricoxib and valdecoxib in human plasma". Biomedical Chromatography. 19 (2): 113–118. doi:10.1002/bmc.423. PMID15473012.
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"Ex-Pfizer Manager Found Guilty of Obstruction". The United States Department of Justice - United States Attorney's Office - District of Massachusetts. 17 March 2009. Archived from the original on 1 June 2009. Retrieved 16 October 2009.
"Ex-Pfizer Manager Found Guilty of Obstruction". The United States Department of Justice - United States Attorney's Office - District of Massachusetts. 17 March 2009. Archived from the original on 1 June 2009. Retrieved 16 October 2009.