1. Department of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Bern University Hospital and University of Bern, Bern, Switzerland.
2. Graduate School for Health Sciences, University of Bern, Bern, Switzerland
3. Institute of Pathology, University of Bern, Bern, Switzerland.
4. Department of Otorhinolaryngology, Head and Neck Surgery, and Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland.
5. Department of Nuclear Medicine, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland.