[1] Univ Oulu, Inst Biomed, Dept Anat & Cell Biol, FI-90014 Oulu, Finland
[2] Oulu Univ Hosp, Clin Res Ctr, Dept Surg, Oulu, Finland
[3] Oulu Univ Hosp, Inst Diagnost, Dept Radiol, Oulu, Finland
[4] Oulu Univ Hosp, Dept Pathol, Oulu, Finland
[5] Finnish Red Cross Blood Serv, Adv Therapies & Product Dev, Helsinki, Finland