Citations for: Wong, F. A.; Edom, R. W.; Duda, M.; Tischio, J. P.; Huang, M.; Juzwin, S.; Tegegne, G. Determination of Norgestimate and Its Metabolites in Human Serum Using High-Performance Liquid Chromatography with Tandem Mass Spectrometric Detection. J. Chromatogr. B Biomed. Sci. Appl. 1999, 734 (2), 247–256.