Harald Holte, MD, PhD1*, Sirpa M. Leppa, MD, PhD2, Magnus Bjorkholm, MD, PhD3, Oystein Fluge, MD, PhD4*, Sirkku Jyrkkio, MD, PhD5*, Jan Delabie, MD, PhD6*, Christer Sundstrom, MD, PhD7*, Marja-Liisa Karjalainen-Lindsberg, MD, PhD8*, Martin Erlanson, MD, PhD9*, Arne Kolstad, MD, PhD1*, Alexander Fossa, MD, PhD1*, Björn Östenstad, MD, PhD10*, Eva Lofvenberg, MD, PhD11, Marie Nordström, MD, PhD11*, Lars Möller-Pedersen, MD, PhD12*, Harald Anderson, PhD13*, Mats Jerkeman, MD, PhD14* and Mikael Eriksson, MD, PhD14*
1Oncology, Norwegian Radium Hospital, Oslo, Norway
2Oncology, Helsinki University Central Hosp., Helsinki, Finland
3Department of Medicine, Division of Hematology, Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
4Oncology and Radiotherapy, Haukeland University Hospital, Bergen, Norway
5Oncology and Radiotherapy, Turku University Centre Hospital, Turku, Finland
6Pathology, Norwegian Radium Hospital, Oslo, Norway
7Pathology, Academic Hospital, Uppsala, Sweden
8Pathology, Helsinki University Central Hosp., Helsinki, Finland
9Oncology, Norrlands University Hospital, Umeå, Sweden
10Oncology, Ulleval University Hospital, Oslo, Norway
11Hematology, Karolinska University Hospital, Stockholm, Sweden
12Hematology, Odense University Hospital, Odense, Denmark
13Cancer Epidemiology, Lund University, Lund, Sweden
14Oncology, Lund University Hospital, Lund, Sweden