The LC–MS-based metabolomics of hydroxytyrosol administration in rats reveals amelioration of the metabolic syndrome - Lemonakis, Nikolaos; Poudyal, Hemant; Halabalaki, Maria; Brown, Lindsay; Tsarbopoulos, Anthony; Skaltsounis, Alexios-Leandros; Gikas, Evagelos (Journal of Chromatography B, 2017)