aDepartment of Surgery, San Raffaele Hospital, Università Vita e Salute, Milan, Italy;
bDepartment of Endocrine Oncology, University Hospital, Uppsala, Sweden;
cDepartment of Pathophysiology, Division of Endocrinology, National University of Athens,
Athens, Greece;
dDepartment of Surgery, Philipps University, Marburg, Germany;
eInstitute of Oncology (VHIO), Vall d'Hebron University Hospital, Barcelona, Spain;
fNeuroendocrine Tumour Unit, Royal Free Hospital, London, UK;
gDepartment of Endocrinology, Medical University of Silesia, Katowice, Poland;
hDepartment of Internal Medicine, Division of Nuclear Medicine, Erasmus Medical Center,
Rotterdam, The Netherlands;
iInstitute of Anatomic Pathology, Policlinico A. Gemelli, Università Cattolica del
Sacro Cuore, Rome, Italy;
jInstitute of Pathology, Technische Universität München, Munich, Germany;
kBeatson Oncology Centre, Gartnavel General Hospital, Glasgow, UK;
lDepartment of Surgery, CHU Robert Debré, Reims, France;
mDigestive Diseases Branch, NIH, Bethesda, Md., USA