(Q50125133)
Statements
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Multisite randomized controlled trials in health services research: scientific challenges and operational issues. (English)
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Weinberger M
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Oddone EZ
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Henderson WG
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Smith DM
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Huey J
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Giobbie-Hurder A
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Feussner JR
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1 June 2001
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39
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6
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627-634
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