1. Department of Nuclear
Medicine, Medical Center − University of Freiburg, Faculty
of Medicine, University of Freiburg, Hugstetterstrasse 55, D-79106, Freiburg, Germany
2. Department of Nuclear
Medicine, Inselspital, Bern University Hospital and University of Bern, Freiburgstrasse, CH-3010 Bern, Switzerland
3. Department of Chemistry, University of Freiburg, D-79104, Freiburg, Germany
4. Department of Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland