Development and validation of a liquid-liquid extraction and gas chromatography/mass spectrometry methodology for cannabidiol and delta 9-tetrahydrocannabinol in human plasma - Camargo, Stefania Pimenta Serrambana; Queiroz, Regina Helena Costa; Malfará, Wilson Roberto; Crippa, José Alexandre de Souza; Martinis, Bruno Spinosa de (Annual Meeting of the International Association of Forensic Toxicologists 9TIAFT), 2009)