1. Department of Chemistry and Biochemistry, Charles E. Schmidt College of Science, Florida Atlantic University, Boca Raton, Florida 33431, United States
2. Ludwig-Maximilians-University Munich, Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Veterinärstrasse 13, 80539 Munich, Germany
3. Department of Applied Tumor Biology, Institute of Pathology, Medical School of the Ruprecht-Karls-University Heidelberg, Im Neuenheimer Feld 224, 69120 Heidelberg, Germany