Pragmatic controlled clinical trials in primary care: the struggle between external and internal validity (Q24805041)
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(P577) Monday, December 22, 2003

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(P1476) "Pragmatic controlled clinical trials in primary care: the struggle between external and internal validity" (language: en)

(P2093) Marshall Godwin
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Lucia Ruhland
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Ian Casson
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Susan MacDonald
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Dianne Delva
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Richard Birtwhistle
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Miu Lam
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Rachelle Seguin
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(P813) Thursday, September 28, 2017

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(P813) Thursday, September 28, 2017

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(P813) Wednesday, May 30, 2018

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(P854) https://pubmed.ncbi.nlm.nih.gov/14690550
(P813) Saturday, December 12, 2020
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