[1] Capio St Gorans Hosp, Dept Surg, St Gorans Plan 1, S-11281 Stockholm, Sweden
[2] Karolinska Inst, Dept Oncol & Pathol, Stockholm, Sweden
[3] Stockholm Cty Council, Dept Healthcare, Stockholm, Sweden
[4] Karolinska Inst, Dept Neurobiol Care Sci & Soc, Div Family Med & Primary Care, Huddinge, Sweden