1Division of Nuclear Medicine, European Institute of Oncology, Milan, Italy
2Klinik und Institut für Nuklearmedizin, Universitätsspital Basel, Basel, Switzerland
3Zentralklinik Bad Berka, Department of Internal Medicine, Gastroenterology and Endocrinology, ENETS Center of Excellence, Bad Berka, Germany
4Campus Virchow Klinikum, Klinik für Gastroenterologie, Hepatologie, Endokrinologie, Diabetes und Stoffwechsel-erkrankungen, Charité Universitaetsmedizin Berlin, Berlin, Germany
5RJ and LA Carver College of Medicine, Department of Pediatrics, University of Iowa, Iowa City, IA USA
6RJ and LA Carver College of Medicine, Department of Internal Medicine, University of Iowa, Iowa City, IA USA
7RJ and LA Carver College of Medicine, Department of Surgical Oncology, University of Iowa, Iowa City, IA USA
8Service of Health Physics, European Institute of Oncology, Milan, Italy
9Department of Nuclear Medicine, Erasmus Medical Center Rotterdam, Rotterdam, The Netherlands
10Nuclear Medicine Section, Division of Human Health, International Atomic Energy Agency, IAEA, Vienna, Austria
11Zentralklinik Bad Berka, Center for Molecular Radiotherapy and Molecular Imaging, ENETS Center of Excellence, Bad Berka, Germany