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1
by Helfand, Mark
Published 2001
Oregon Health & Science University, Evidence-Based Practice Center

2
by Helfand, Mark
Published 2001
Oregon Health & Science University, Evidence-Based Practice Center

3
by Chou, Roger, Clark, Elizabeth, Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality

4
by Chou, Roger, Clark, Elizabeth, Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality

5
by Helfand, Mark
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center

6
by Helfand, Mark
Published 2009
Agency for Healthcare Research and Quality

7
by Helfand, Mark
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center

8
by Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality (US)

9
by Chandler, Chris
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center

10
by Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality (US)

11
by Chandler, Chris
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center

12
by Helfand, Mark
Published 2009
Oregon Health & Science University

13
by Helfand, Mark
Published 2007
Oregon Health & Science University

14
by Helfand, Mark
Published 2009
Oregon Health & Science University

15
by Helfand, Mark
Published 2007
Oregon Health & Science University

16
by Helfand, Mark
Published 2008
Department of Veterans Affairs, Health Services Research & Development Service

17
by Helfand, Mark
Published 2008
Department of Veterans Affairs, Health Services Research & Development Service

20
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center