Liquid chromatographic/electrospray ionization tandem mass spectrometric study of the phenolic composition of cocoa (theobroma cacao) - Sánchez-Rabaneda, F; Jáuregui, O; Casals, I; Andrés-Lacueva, C; Izquierdo-Pulido, M; Lamuela-Raventós, R M (J Mass Spectrom, 2003)