(3)Laktoseintoleranse • Definisjon: Mangel på eller reduksjon av laktase i tynntarmens slimhinne

11 Institute of Clinical Medicine, University of Oslo, Oslo, Norway 36.. 12 Department of Radiology and Nuclear Medicine, Section of Neuroradiology, Oslo University Hospital,

Documentation and Evaluation, Northern Norway Regional Health Authority trust, Tromsø, Norway; e Department of Cardiology, University Hospital of North Norway, Tromsø, Norway;

European Palliative Care Research Centre (PRC), Department of Oncology, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway. Department

1 Nord University, Faculty of Health Science, Levanger; 2 Department of Internal Medicine, Levanger Hospital, Nord-Trondelag Hospital Trust; 3 Department of Neuroscience,

4 Department of Clinical Science, University of Bergen, Norway, 5 Laboratory of Clinical Biochemistry, Stavanger University Hospital, Norway, 6 Cardiology Department, Stavanger

1 Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway, 2 Department of Medical Biology, The Arctic University of Norway, Tromsø,

3 Norwegian Renal Registry, Section of Nephrology, Department of Transplantation Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway; 4 Section of Nephrology,

1 Clinic of Internal Medicine, Østfold Hospital, Gralum, 2 Institute of Clinical Medicine, University of Oslo, 3 Department of Haematology, Oslo University Hospital, Oslo, 4