Determination of caffeine in ergogenic drugs seized on the Brazil-Paraguay border - Demétrio, Bianca P; Oliveira, Priscilla L. G. de; Morais, Maicon de; Tavares, Marina Franco Maggi; Zilly, Adriana; Freitas, Fernando Augusto de (Latin-American Symposium on Biotechnology, Biomedical, Biopharmaceutical, and Industrial Applications of Capillary Electrophoresis and Microchip Technology (LACE), 2015)