1. Department of Clinical Physiology and Nuclear Medicine, Center for Functional and Diagnostic Imaging and Research; Hvidovre Hospital; Hvidovre Denmark
2. Gastroenterology and Hepatology Department; Colentina Clinical Hospital; Bucharest Romania
3. “Carol Davila” University of Medicine and Pharmacy; Bucharest Romania
4. Faculty of Health Sciences; University of Copenhagen; Copenhagen Denmark
5. Gastro Unit, Medical Division; Hvidovre Hospital; Hvidovre Denmark