1. Neuroendocrine Tumor Unit, ENETS Center of Excellence, Department of Endocrinology and Metabolism, Hadassah Medical Organization and Faculty of Medicine Hebrew University of Jerusalem Jerusalem Israel
2. Carcinoid Heart Disease Clinic, Department of Cardiology Royal Free Hospital & University College London London UK
3. Department of Internal Medicine, Section of Endocrinology, ENETS Center of Excellence Erasmus MC and Erasmus Cancer Institute Rotterdam The Netherlands
4. Department of Cardiology Liverpool Heart and Chest Hospital Liverpool UK
5. Department of Nuclear Medicine University Ulm Ulm Germany
6. Department of General, Visceral and Transplantation Surgery University Hospital Muenster Muenster Germany
7. Department of Diagnostic and Interventional Radiology Leipzig University Medical Center Leipzig Germany
8. Department of Medical Oncology Netherlands Cancer Institute Amsterdam the Netherlands
9. Digestive Disease Unit, Department of Medical‐Surgical Sciences and Translational Medicine Sapienza University of Rome, ENETS Center of Excellence Rome Italy
10. Department of Cardiothoracic Surgery and Anesthesiology, University Hospital, and Department of Surgical Sciences Uppsala University Uppsala Sweden
11. Department of Cardiovascular Diseases Mayo Clinic Rochester Minnesota USA
12. Department of Cardiac Surgery "Louis Pradel" Cardiologic Hospital Lyon France
13. Department of Clinical Oncology AC Camargo Cancer Center São Paulo Brazil
14. Centre for Gastroenterology, Neuroendocrine Tumour Unit, ENETS Centre of Excellence Royal Free Hospital London UK