1. Heart Center, Kuopio University Hospital, Kuopio 70029, Finland
2. Institute of Clinical Medicine, University of Eastern Finland, Kuopio 70211, Finland
3. Turku PET Centre, Turku University Hospital, Turku 20521, Finland
4. Center of Diagnostic Imaging, Kuopio University Hospital, Kuopio 70029, Finland
5. Heart Center, Central Hospital of North Karelia, Joensuu 80210, Finland
6. A.I. Virtanen Institute, University of Eastern Finland, Kuopio 70211, Finland
7. University of California San Diego, La Jolla, CA 92093, USA
8. Gene Therapy Unit, Kuopio University Hospital, Kuopio 70029, Finland