[The operative therapy for chronic back pain: a meta-analysis].
Koy
Timmo
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Eysel
Peer
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Sauderland
Stefan
S
D001416:Back Pain / Q000453:epidemiology* / Q000601:surgery* / Q000628:therapy; D002986:Clinical Trials as Topic; D006801:Humans; D010166:Palliative Care / Q000379:methods; D016896:Treatment Outcome