1. Division of Human Nutrition, Wageningen University, Wageningen, The Netherlands
2. Department of Internal Medicine and Dermatology, Dietetics, University Medical Center Utrecht, Utrecht, The Netherlands
3. Department of Head and Neck Surgical Oncology, University Medical Center Utrecht, Utrecht, The Netherlands
4. Department of Medical Oncology, University Medical Center Utrecht, Utrecht, The Netherlands
5. Department of Radiotherapy, University Medical Center Utrecht, Utrecht, The Netherlands.