[1] German Canc Res Ctr, Div Mol Genet Epidemiol, D-69120 Heidelberg, Germany
[2] Lund Univ, Ctr Primary Hlth Care Res, Malmo, Sweden
[3] Lund Univ, Clin Res Ctr, Dept Clin Sci, Malmo, Sweden
[4] Skane Univ Hosp, Dept Plast & Reconstruct Surg, Malmo, Sweden
[5] Umea Univ, Dept Med Biosci Pathol, Umea, Sweden
[6] Univ Helsinki, Haartman Inst, Canc Gene Therapy Grp, Dept Pathol & Transplantat Lab, FIN-00290 Helsinki, Finland