[1] Sahlgrens Univ Hosp, Sect Hematol & Coagulat, Dept Med, DK-2100 Gothenburg, Sweden
[2] Rigshosp, Copenhagen, Denmark
[3] St Olavs Hosp, Trondheim, Norway
[4] Univ Hosp, Dept Hematol, Lund, Sweden
[5] N Estonian Reg Hosp, Tallinn, Estonia
[6] Turku Univ, Cent Hosp, Dept Med, Turku, Finland
[7] Landspitali Univ Hosp, DK-5000 Landspitali, Iceland
[8] Odense Univ Hosp, Dept Hematol, Odense, Denmark
[9] Linkoping Univ Hosp, Linkoping, Sweden
[10] Univ N Norway, Tromso, Norway
[11] Norrlands Univ Hosp, Umea, Sweden
[12] Univ Hosp, Rikshosp, Hematol Unit, Oslo, Norway
[13] Aalborg Hosp, Aalborg, Denmark
[14] Karolinska Inst, Ctr Hematol, Stockholm, Sweden
[15] Ullevaal Univ Hosp, Oslo, Norway
[16] Stavanger Univ Hosp, Stavanger, Norway
[17] Orebro Univ Hosp, Orebro, Sweden
[18] Karolinska Univ Hosp Huddinge, Karolinska Inst, N-5021 Stockholm, Sweden
[19] Haukeland Hosp, Bergen, Norway
[20] Amtsygehuset Herlev, Copenhagen, Denmark
[21] Tampere Univ Hosp, DK-8000 Tampere, Finland
[22] Aarhus Univ Hosp, Aarhus, Denmark
[23] Malmo Univ Hosp, Dept Med, Malmo, Sweden
[24] St Olavs Univ Hosp, Trondheim, Norway