1
by Helfand, Mark
Published 2007
Dept. of Veterans Affairs, Health Services Research & Development Service

2
by Helfand, Mark
Published 2009
Agency for Healthcare Research and Quality

3
by Chou, Roger, Helfand, Mark, Peterson, Kim, Dana, Tracy
Published 2006
Oregon Health & Science University

4
by Helfand, Mark
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center

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

6
by Shipman, Scott, Helfand, Mark, Nygren, Peggy, Bougatsos, Christina
Published 2006
Agency for Healthcare Research and Quality (US)

7
by Helfand, Mark
Published 2001
Agency for Healthcare Research and Quality (US)

8
by Helfand, Mark, Mahon, Susan, Eden, Karen B.
Published 2001
Agency for Healthcare Research and Quality (US)

9
by Helfand, Mark
Published 2009
Oregon Health & Science University

10
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

11
by Chou, Roger, Clark, Elizabeth, Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality

12
by Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality (US)

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

14
by Humphrey, Linda L., Chan, Benjamin, Detlefsen, Stephanie, Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)

15
by Nelson, Heidi D., Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)

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

17
by Helfand, Mark
Published 2007
Oregon Health & Science University

18
by Helfand, Mark
Published 2009
Oregon Health & Science University

19
by Helfand, Mark
Published 2001
Oregon Health & Science University, Evidence-Based Practice Center