1. Department of Surgical Oncology and Gastrointestinal Surgery, Erasmus MC Cancer Institute , Rotterdam , the Netherlands
2. Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC Cancer Institute , Rotterdam , The Netherlands
3. Department of Internal Medicine, Division of Endocrinology, ENETS Centre of Excellence, Erasmus MC Cancer Institute , Rotterdam , the Netherlands
4. Department of Anaesthesiology, Erasmus Medical Centre , Rotterdam , the Netherlands
5. Department of Surgery, Leiden University Medical Centre , Leiden , the Netherlands
6. Department of Cardiothoracic Surgery, Leiden University Medical Centre , Leiden , the Netherlands