1. Institute of Pharmacology and Toxicology (E.M.O., R.G.O., H.S.), University of Würzburg, D-97078 Würzburg, Germany
2. Department of Analytical Chemistry (E.M.O.), Faculty of Pharmacy, University of El-Minia, 61519 Minia, Egypt
3. Department of Nuclear Medicine (P.-A.A.-L., M.C.K.), University Hospital Würzburg, Würzburg 97080, Germany