1 Department of Medical Physics and Radiation Protection, Gurutzeta-Cruces University Hospital/Biocruces Bizkaia Health Research Institute, Plaza Cruces S/N, 48903, Barakaldo, Spain.
2 Faculty of Engineering, Department of Applied Physics, UPV/EHU, Bilbao, Spain.
3 Medical Radiation Physics, Lund University, Lund, Sweden.
4 Radiation Research Unit, Department of Medical Imaging and Radiation Sciences, Istituto Europeo Di Oncologia, Milan, Italy.
5 Department of Physics and Computational Radiology, Division of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway.
6 Department of Physics, University of Oslo, Oslo, Norway.
7 Joint Department of Physics, Royal Marsden NHSFT and Institute of Cancer Research, Sutton, UK.
8 Department of Experimental and Clinical Medicine, "Magna Graecia" University of Catanzaro, Catanzaro, Italy.
9 Nuclear Medicine Unit, University Hospital "Mater Domini", Catanzaro, Italy.
10 Department of Radiology & Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands.
11 Department of Medical Imaging, Radboud University Medical Center, Nijmegen, The Netherlands.
13 Section of Nuclear Medicine and PET, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.
14 Nuclear Medicine Division, Foundation IRCCS Istituto Nazionale Tumori, Via Giacomo Venezian 1, 20133, Milan, Italy.
15 Medical Physics Department, Pammakaristos Hospital of Divine Providence, Iakovaton 43, 11144, Athens, Greece.
16 Department of Clinical Physiology and Nuclear Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
17 Functional Imaging, BC Cancer, Vancouver, BC, Canada.
18 Department of Radiology, University of British Columbia, Vancouver, BC, Canada.
19 National Radiation Protection Institute, Bartoskova 1450/28, 140 00, Praha 4, Nusle, Czech Republic.
20 Institute of Radiation Physics, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland.
21 Department of Medical Radiation Sciences, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg, University, Gothenburg, Sweden.
22 Department of Medical Physics and Biomedical Engineering (MFT), Sahlgrenska University Hospital, Gothenburg, Sweden.