Plasma Kynurenine Predicts Severity and Complications of Heart Failure and Associates with Established Biochemical and Clinical Markers of Disease oleh Thomas Bernd Dschietzig, Karl-Heinz Kellner, Katrin Sasse, Felix Boschann, Robert Klüsener, Jana Ruppert, Franz Paul Armbruster, Dragic Bankovic, Andreas Meinitzer, Veselin Mitrovic, Christoph Melzer