1. Department of Nuclear Medicine, University Hospital Marburg, 35043 Marburg, Germany
2. Department of Radiology and Nuclear Medicine, Nuclear Medicine, Division of Nuclear Medicine, University Hospital Magdeburg, 39120 Magdeburg, Germany
3. Department of Nuclear Medicine, University Hospital Würzburg, 97080 Würzburg, Germany
4. Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 München, Germany