Gulbrandsen, Påla,*; Madsen, Henrik Bjarkeb; Benth, Jurate Saltytea; Lærum, Evenc
aHØKH, Research Centre, Akershus University Hospital and Faculty Division Akershus University Hospital, University of Oslo, Norway
bThe Back Research Center, Funen, Denmark
cFORMI, Ullevål University Hospital, Norway
*Corresponding author. Address: Akershus University Hospital, Mail drawer 95, 1478 Lørenskog, Norway. Tel.: +47 9582 7288.
E-mail address:[email protected]
Submitted January 21, 2010; revised April 21, 2010; accepted May 26, 2010.