Pichler, Alexander, Andreas Meinitzer, Dietmar Enko, Peter Schober, Georg Singer, Christoph Castellani, Markus Herrmann, Sandra J. Holasek, Holger Till, and Jana Maria Windhaber. “Tryptophan Recovery Index As a New Biomarker for Fitness”. EXCLI Journal 21 (June 24, 2022): 888–896. Accessed September 19, 2024. https://www.excli.de/excli/article/view/4889.