[1] University Hospital Innsbruck,
[2] Department of Neurology,undefined
[3] Anichstrasse 35,undefined
[4] A-6020 Innsbruck,undefined
[5] University Hospital Innsbruck,undefined
[6] Institute of Hygiene,undefined
[7] Schöpfstrasse 41,undefined
[8] A-6020 Innsbruck,undefined