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Koren L, Ng ESM, Soma KK, Wynne-Edwards KE. Sample Preparation and Liquid Chromatography-Tandem Mass Spectrometry for Multiple Steroids in Mammalian and Avian Circulation. PLoS ONE. 2012 Feb 27;7(2):e32496. doi: 10.1371/journal.pone.0032496. |