1. Department of Gastroenterology, Herlev and Gentofte University Hospital , Ringvej 75, 2730 Herlev , Denmark
2. Department of Clinical Research, University of Southern Denmark , J.B. Winsløws Vej 19, 5230 Odense , Denmark
3. School of Health Sciences, Faculty of Nursing, University of Iceland , Eirksgatra 34, 101 Reykjavík , Iceland
4. Nursing and Midwifery Care Research Center, Adult Health Nursing Department, School of Nursing and Midwifery, Isfahan University of Medical Sciences , Hezar Jerib street, 8174673461 Isfahan , Iran
5. Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen , Blegdamsvej 3B, 2200 Copenhagen , Denmark
6. Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institute , 171 77 Stockholm , Sweden