Quantification of nimesulide in human plasma by high-performance liquid chromatography/tandem mass spectometry. Application to bioequivalence studies - Barrientos-Astigarraga, R E; Muscará, Marcelo Nicolás; Vannuchi, Y B; Sucupira, Mauro; Moreno, R. A.; De Nucci, Gilberto (Journal of Mass Spectrometry, 2001)