[1] Vasteras Hosp, Dept Med, Neurol, Vasteras, Sweden
[2] Uppsala Univ, Dept Neurosci, Neurosurg, Uppsala, Sweden
[3] Univ Gothenburg, Sahlgrenska Acad, Inst Neurosci & Physiol, Clin Neurochem Lab, Molndal Gothenburg, Sweden
[4] Univ Gothenburg, Inst Neurosci & Physiol, Gothenburg, Sweden
[5] Univ Gothenburg, Sahlgrenska Acad, Clin Neurosci, Gothenburg, Sweden
[6] Karolinska Inst, Dept Clin Neurosci, Stockholm, Sweden
[7] Uppsala Univ, Dept Neurosci, Neurol, Uppsala, Sweden