1 Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713, EZ, Groningen, The Netherlands. p.h.elsinga@umcg.nl.
2 Nuclear Medicine Service, Centre Hospitalier Universitaire Vaudois, Bugnon 46, 1011, Lausanne, Switzerland.
3 Department of Biomedical Sciences, Humanitas University, Milan, Italy.
4 Department of Diagnostic Imaging, Humanitas Clinical and Research Center - IRCCS, Milan, Italy.