(Q37604894)
Statements
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Evidence-based medicine, systematic reviews, and guidelines in interventional pain management: part 6. Systematic reviews and meta-analyses of observational studies (English)
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Laxmaiah Manchikanti
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Joshua A Hirsch
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Sukdeb Datta
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Howard S Smith
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1 September 2009
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12
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5
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819-850
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Identifiers
1 reference