Development and validation of a capillary electrophoresis method for the determination of ethinylestradiol and drospirenone in oral contraceptives - Silva, Viviane Benevenuti; Galdos, Angel Arturo Gaona; Leite, Helen Dutra; Aurora-Prado, Maria Segunda; Kedor-Hackmann, Erika Rosa Maria; Singh, Anil Kumar; Santoro, Maria Inês Rocha Miritello (Latin-American Symposium on Biotechnology, Biomedical, Biopharmaceutical and Industrial Applications of Cappilary Electrophoresis and Microchip Technology, 2012)