Hatlebakk Jan G, Emken Birgitte-Elise Grinde, Glazkov Valery, Hoff Dag Arne Lihaug, Hausken Trygve
Department and Institute of Internal Medicine, Haukeland University Hospital, Norway.
Tidsskr Nor Laegeforen. 2013 Jan 8;133(1):43-6. doi: 10.4045/tidsskr.12.0019.