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Andersen JH, Kaergaard A, Frost P, Thomsen JF, Bonde JP, Fallentin N, Borg V, Mikkelsen S.Andersen JH, et al. Among authors: frost p.Spine (Phila Pa 1976). 2002 Mar 15;27(6):660-7. doi: 10.1097/00007632-200203150-00017.Spine (Phila Pa 1976). 2002.PMID: 11884915