1. Department Safety in the Food Chain, German Federal Institute for Risk Assessment (BfR), 10589 Berlin, Germany
2. Faculty of Organic Agricultural Sciences, University of Kassel, 37213 Witzenhausen, Germany
3. Institute for Animal Nutrition, University of Veterinary Medicine Hannover, Foundation, 30173 Hannover, Germany
4. Department Food Safety, German Federal Institute for Risk Assessment, 10589 Berlin, Germany
5. Center for Protection of Laboratory Animals, German Federal Institute for Risk Assessment (BfR), 12277 Berlin, Germany