[1] Univ Gothenburg, Sahlgrenska Univ Hosp, Inst Neurosci & Physiol, Bla Straket 7, S-41345 Gothenburg, Sweden
[2] Univ Gothenburg, Inst Neurosci & Physiol, Gothenburg, Sweden
[3] Ostra Sahlgrenska Univ Hosp, Dept Surg, Gothenburg, Sweden
[4] Sahlgrens Univ Hosp, Dept Radiol, Gothenburg, Sweden
[5] Sahlgrens Univ Hosp, Dept Neurosurg, Gothenburg, Sweden
[6] Karolinska Inst, Dept Clin Neurosci & Med, Stockholm, Sweden
[7] Karolinska Univ Hosp, Dept Neurosurg, Stockholm, Sweden
[8] Copenhagen Univ Hosp, Dept Neurosurg, Copenhagen, Denmark
[9] Karolinska Univ Hosp, Dept Plast & Reconstruct Surg, Stockholm, Sweden
[10] Karolinska Inst, Dept Mol Med & Surg, Stockholm, Sweden
[11] Karolinska Inst, Dept Global Publ Hlth, Solna, Sweden
[12] Ctr Epidemiol & Community Med, Stockholm, Region Stockhol, Sweden