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

2
by Helfand, Mark
Published 2001
Agency for Healthcare Research and Quality (US)

3
by Helfand, Mark
Published 2007
Dept. of Veterans Affairs, Health Services Research & Development Service

4
by Helfand, Mark
Published 2009
Agency for Healthcare Research and Quality

5
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

6
by Helfand, Mark
Published 2008
Department of Veterans Affairs, Health Services Research & Development Service

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

8
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

9
by Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality (US)

10
by Helfand, Mark
Published 2007
Oregon Health & Science University

11
by Helfand, Mark
Published 2009
Oregon Health & Science University

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

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

15
by Helfand, Mark
Published 2001
Oregon Health & Science University, Evidence-Based Practice Center

16
by Helfand, Mark
Published 2009
Oregon Health & Science University

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

18
by Helfand, Mark
Published 2001
Agency for Healthcare Research and Quality (US)

19
by Helfand, Mark
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center

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