Affiliation: | (1) Department of Surgery, Vaasa Central Hospital, Vaasa;(2) Department of Surgery, Tampere University Hospital, Tampere;(3) Department of Surgery, Päijät-Häme Central Hospital, Lahti;(4) Department of Surgery, Seinäjoki Central Hospital, Seinäjoki;(5) Department of Surgery, Kanta-Häme Central Hospital, Hämeenlinna;(6) Department of Surgery, Kokkola Central Hospital, Kokkola;(7) Department of Surgery, Kainuu Central Hospital, Kajaani;(8) Department of Surgery, Lapland Central Hospital, Rovaniemi;(9) Department of Surgery, Oulu University Hospital, Oulu, Finland;(10) Division of Vascular Surgery, Department of Surgery, Helsinki University Central Hospital, P.O. Box 261, FIN-00029 HUCH Helsinki, Finland |