1. Centre of Functional Imaging and Research, Department of Clinical Physiology and Nuclear Medicine, and Gastro Unit, Medical Division, Hvidovre Hospital, Faculty of Health Sciences, University of Copenhagen, Denmark
2. Gastro Unit, Medical Division, Hvidovre Hospital, Faculty of Health Sciences, University of Copenhagen, Denmark
3. Centre of Functional Imaging and Research, Department of Clinical Physiology and Nuclear Medicine 239, Hvidovre Hospital, DK-2650 Hvidovre, Faculty of Health Sciences, University of Copenhagen, Denmark