[1] Uit Arctic Univ Norway, Dept Clin Med, Thrombosis Res & Expertise Ctr, Tromso, Norway
[2] Univ Hosp North Norway, Div Internal Med, Tromso, Norway
[3] Uit Arctic Univ Norway, Dept Community Med, Tromso, Norway
[4] Uit Arctic Univ Norway, Dept Community Med, Brain & Circulat Res Grp, Tromso, Norway
[5] Univ Hosp North Norway, Dept Neurol, Tromso, Norway