<style face="normal" font="default" size="100%">More is not always better: cost-effectiveness analysis of combined, single behavioral and single physical rehabilitation programs for chronic low back pain.</style>

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0<style face="normal" font="default" size="100%">More is not always better: cost-effectiveness analysis of combined, single behavioral and single physical rehabilitation programs for chronic low back pain.</style><style face="normal" font="default" size="100%">More is not always better: cost-effectiveness analysis of combined, single behavioral and single physical rehabilitation programs for chronic low back pain.</style>