1. Department of Public Health and Nursing; Faculty of Medicine and Health Sciences; Norwegian University of Science and Technology; Trondheim Norway
2. Department of Immunology and Transfusion Medicine; St Olavs Hospital; Trondheim University Hospital; Trondheim Norway
3. Department of Cancer Research and Molecular Medicine; Faculty of Medicine and Health Sciences; Norwegian University of Science and Technology; Trondheim Norway
4. Department of Pediatrics; St Olavs Hospital; Trondheim University Hospital; Trondheim Norway
5. Department of Laboratory Medicine, Children's and Women's Health; Faculty of Medicine and Health Sciences; Norwegian University of Science and Technology; Trondheim Norway