Sundseth, Jarle
Jacobsen, Eva Astrid
Kolstad, Frode
Sletteberg, Ruth O.
Nygaard, Oystein P.
Johnsen, Lars Gunnar
Pripp, Are Hugo
Andresen, Hege
Fredriksli, Oddrun Anita
Myrseth, Erling
Zwart, John A.
Funding for this research was provided by:
DePuy Spine, Johnson & Johnson and OrtoMedic (IBAn no: NO168601 05 10270)