1. ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland
2. ETH Zurich, Animal Nutrition, Institute of Agricultural Sciences, Zurich, Switzerland
3. Bavarian Center for Biomolecular Mass Spectrometry, Technische Universität München, Freising, Germany
4. University of Veterinary Medicine, Clinic for Cattle, Endocrinology, Hannover, Germany
5. Institute of Biological Chemistry and Nutrition, University of Hohenheim, Stuttgart, Germany
6. Nutritional Physiology, Technische Universität München, Freising, Germany
7. Institute of Clinical Pharmacology, Goethe University Frankfurt, Frankfurt, Germany