21
by Helfand, Mark, Peterson, Kim, Carson, Susan, Humphrey, Linda L.
Published 2013
Department of Veterans Affairs, Health Services Research & Development Service

22
by Carson, Susan, Peterson, Kim, Humphrey, Linda L., Helfand, Mark
Published 2013
Department of Veterans Affairs, Health Services Research & Development Service

23
by Guise, Jeanne-Marie, Mahon, Susan, Aickin, Mikel, Helfand, Mark
Published 2001
Agency for Healthcare Research and Quality (US)

24
by Humphrey, Linda L., Chan, Benjamin, Detlefsen, Stephanie, Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)

25
by Nelson, Heidi D., Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)

26
by Chandler, Chris
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center

27
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

28
by Helfand, Mark
Published 2009
Oregon Health & Science University

29
by Helfand, Mark
Published 2009
Oregon Health & Science University

30
by Nelson, Heidi D.
Published 2001
Agency for Healthcare Research and Quality (US)

31
by Helfand, Mark
Published 2001
Agency for Healthcare Research and Quality (US)

32
by Helfand, Mark, Mahon, Susan, Eden, Karen B.
Published 2001
Agency for Healthcare Research and Quality (US)

33
by Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality (US)

34
by Helfand, Mark
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center

35
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

37
by Chou, Roger, Helfand, Mark, Peterson, Kim, Dana, Tracy
Published 2006
Agency for Healthcare Research and Quality (US)

38
by Chou, Roger, Clark, Elizabeth, Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality

39
by McDonagh, Marian S.
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

40
by Chou, Roger
Published 2007
Oregon Health & Science University