1 Biomedical Chemistry, Clinic of Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Mannheim, Germany.
2 Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany.
3 Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Mannheim, Germany.
4 Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB, Canada. schirrma@ualberta.ca.