%0 Journal Article %T Determination of Ranitidine in Human Plasma by SPE and ESI-LC-MS/MS for Use in Bioequivalence Studies %A Karini B. Bellorio %A Maria Isabel R. Alves %A Nelson R. Antoniosi Filho %J ISRN Chromatography %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/484592 %U http://dx.doi.org/10.1155/2013/484592