1. Renal Department, Odense University Hospital, Odense
2. Renal Department, Herlev University Hospital, Herlev,.
3. Dialysis Unit, Department of Internal Medicine, Fredericia Hospital, Fredericia
4. Renal Department, Aalborg Hospital, Aalborg
5. Dialysis Unit, Department of Internal Medicine, Holstebro Hospital, Holstebro
6. Dialysis Unit, Department of Internal Medicine, Esbjerg Hospital, Esbjerg
7. Dialysis Unit, Department of Internal Medicine, Viborg Hospital, Viborg, Denmark