1
by Helfand, Mark
Published 2008
Department of Veterans Affairs, Health Services Research & Development Service

2
by Helfand, Mark
Published 2009
Oregon Health & Science University

3
by Helfand, Mark
Published 2009
Agency for Healthcare Research and Quality

4
by Helfand, Mark
Published 2007
Oregon Health & Science University

5
by Helfand, Mark
Published 2009
Oregon Health & Science University

6
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

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 2001
Agency for Healthcare Research and Quality (US)

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

11
by Helfand, Mark
Published 2001
Oregon Health & Science University, Evidence-Based Practice Center

12
by Helfand, Mark
Published 2007
Dept. of Veterans Affairs, Health Services Research & Development Service

13
by Helfand, Mark, Carson, Susan
Published 2008
Agency for Healthcare Research and Quality (US)

14
by Nelson, Heidi D., Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)

15
by Chou, Roger, Clark, Elizabeth, Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality

16
by Helfand, Mark, Mahon, Susan, Eden, Karen B.
Published 2001
Agency for Healthcare Research and Quality (US)

17
by Chou, Roger, Helfand, Mark, Peterson, Kim, Dana, Tracy
Published 2006
Agency for Healthcare Research and Quality (US)

18
by Chou, Roger, Helfand, Mark, Peterson, Kim, Dana, Tracy
Published 2006
Oregon Health & Science University

19
by Shipman, Scott, Helfand, Mark, Nygren, Peggy, Bougatsos, Christina
Published 2006
Agency for Healthcare Research and Quality (US)

20
by Guise, Jeanne-Marie, Mahon, Susan, Aickin, Mikel, Helfand, Mark
Published 2001
Agency for Healthcare Research and Quality (US)