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

3
by Nelson, Heidi D.
Published 2001
Agency for Healthcare Research and Quality (US)

4
by Helfand, Mark
Published 2001
Agency for Healthcare Research and Quality (US)

5
by Guise, Jeanne-Marie, Mahon, Susan, Aickin, Mikel, Helfand, Mark
Published 2001
Agency for Healthcare Research and Quality (US)

6
by Helfand, Mark
Published 2007
Dept. of Veterans Affairs, Health Services Research & Development Service

7
by Helfand, Mark
Published 2009
Agency for Healthcare Research and Quality

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

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

11
by Humphrey, Linda L., Chan, Benjamin, Detlefsen, Stephanie, Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)

12
by Nelson, Heidi D., Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)

13
by Helfand, Mark
Published 2008
Department of Veterans Affairs, Health Services Research & Development Service

14
by Kansagara, Devan
Published 2008
Department of Veterans Affairs, Health Services Research & Development Service

16
by Helfand, Mark
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center

17
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

18
by Chou, Roger, Helfand, Mark, Peterson, Kim, Dana, Tracy
Published 2006
Agency for Healthcare Research and Quality (US)

19
by Chou, Roger, Clark, Elizabeth, Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality

20
by Helfand, Mark, Mahon, Susan, Eden, Karen B.
Published 2001
Agency for Healthcare Research and Quality (US)