1. Department of Nuclear Medicine and Thyroid Centre; Oncology Institute of Southern Switzerland; Bellinzona Switzerland
2. Laboratory for Clinical Chemistry; Department of Laboratory Medicine; Ente Ospedaliero Cantonale; Bellinzona Switzerland
3. Medical School; University of Zurich; Zurich Switzerland
4. Department of Nuclear Medicine; Ente Ospedaliero “Ospedali Galliera”; Genova Italy
5. Laboratory for Genetics and Cytogenetics; Department of Laboratory Medicine; Ente Ospedaliero Cantonale; Bellinzona Switzerland
6. Department of Nuclear Medicine; Marburg University Hospital; Marburg Germany
7. Laboratory for Clinical Pathology; Department of Laboratory Medicine; Udine University Hospital; Udine Italy