Simultaneous determination of pregnenolone sulphate, dehydroepiandrosterone and allopregnanolone in rat brain areas by liquid chromatography–electrospray tandem mass spectrometry. - Rustichelli, Cecilia; Pinetti, Diego; Lucchi, Chiara; Ravazzini, Federica; Puia, Giulia (Journal of Chromatography B: Analytical Technologies in the Biomedical & Life Sciences, 2013)