(Q38079065)
Statements
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Nonrandomized studies are not always found even when selection criteria for health systems intervention reviews include them: a methodological study (English)
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Claire Glenton
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Simon Lewin
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Alain Mayhew
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Inger Scheel
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Jan Odgaard-Jensen
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4 February 2013
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66
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4
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367-370
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Identifiers
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