Ultra-high performance hydrophilic interaction liquid chromatography - Triple quadrupole tandem mass spectrometry method for determination of cysteine, homocysteine, cysteinyl-glycine and glutathione in rat plasma / Andrea Forgácsová, Jaroslav Galba, Jana Mojžišová, Peter Mikuš, Juraj Piešťanský, Andrej Kováč KE304