Profiling of Amino Acids in Urine Samples of Patients Suffering from inflammatory bowel disease by capillary electrophoresis-mass spectrometry / Juraj Piešťanský, Dominika Olešová, Jaroslav Galba, Katarína Maráková, Vojtech Parrák, Peter Sečník, Peter Jr. Sečník, Branislav Kováčech, Andrej Kováč, Zuzana Zelinková, Peter Mikuš KE304