1. Department of Food Chemistry and Toxicology
2. Berlin Institute of Technology
3. Gustav-Meyer-Allee 25
4. D-13355 Berlin
5. Germany
6. Institute of Nutritional Science
7. University of Potsdam
8. TraceAge – DFG Research Unit on Interactions of Essential Trace Elements in Healthy and Diseased Elderly
9. Potsdam-Berlin-Jena