Professor at Faculty of Medicine, University of Oslo and Head of Gynecologic Pathology service, Department of Pathology, Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway. His main research interests are cytopathology and gynecological pathology. His research is focused on genetic characteristics and biomarkers related to cancer diagnosis, metastasis, cell survival, prognosis and chemoresistance in cancers involving the serosal cavities, particularly tubo- ovarian carcinoma and mesothelioma. He is an author of 400 peer-reviewed scientific publications and 15 book chapters, as well as the editor of a book on serous effusions. He is also a reviewer and a member of editorial boards for leading international peer-reviewed journals, as well as invited speaker on international and national meetings and conferences.