1. Department of Upper Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
2. Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden
3. Medilab – Täby, Sweden Medilab, Täby, Sweden
4. Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Karolinska University Hospital
5. Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
6. Department of Radiology, Karolinska University Hospital, Stockholm, Sweden