1. Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA 19104, USA
2. Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19144, USA
3. The Intervention Center, Division of Technology and Innovation, Oslo University Hospital, Sognsvannsveien 20, 0372 Oslo, Norway
4. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Problemveien 7, 0315 Oslo, Norway
5. Department of Nuclear Medicine, Odense University Hospital, 5000 Odense, Denmark
6. Department of Clinical Research, University of Southern Denmark, 5230 Odense, Denmark