Immune and Neuroendocrine Trait and State Markers in Psychotic Illness: Decreased Kynurenines Marking Psychotic Exacerbations - De Picker, Livia; Fransen, Erik; Coppens, Violette; Timmers, Maarten; de Boer, Peter; Oberacher, Herbert; Fuchs, Dietmar; Verkerk, Robert; Sabbe, Bernard; Morrens, Manuel (Frontiers in Immunology, 2020)