1. Department of Clinical Physiology and Nuclear Medicine, Hvidovre University Hospital, Faculty of Health Sciences, University of Copenhagen, Denmark
2. Department of Clinical Physiology and Nuclear Medicine, Århus University Hospital, Skejby, Faculty of Health Sciences, University of Århus, Denmark
3. Department of Radiology, Rigshospitalet University Hospital, Faculty of Health Sciences, University of Copenhagen, Denmark
4. Department of Gastroenterology, Glostrup University Hospital, Faculty of Health Sciences, University of Copenhagen, Denmark
5. Department of Oral and Maxillofacial Surgery, Rigshospitalet, Faculty of Health Sciences, University of Copenhagen, Denmark