21
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

22
by Helfand, Mark, Mahon, Susan, Eden, Karen B.
Published 2001
Agency for Healthcare Research and Quality (US)

23
by Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality (US)

24
by Chandler, Chris
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center

25
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

26
by McDonagh, Marian S.
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

27
by Chou, Roger
Published 2007
Oregon Health & Science University

28
by Helfand, Mark
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center

29
by Shipman, Scott, Helfand, Mark, Nygren, Peggy, Bougatsos, Christina
Published 2006
Agency for Healthcare Research and Quality (US)

30
by Kansagara, Devan
Published 2008
Department of Veterans Affairs, Health Services Research & Development Service

32
by Veazie, Stephanie, Vela, Kathryn, Helfand, Mark
Published 2020
Department of Veterans Affairs, Veterans Health Administration, Health Services Research & Development Service

33
by Chou, Roger
Published 2007
Oregon Health & Science University

34
by Nelson, Heidi D., Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)

35
by Nelson, Heidi D.
Published 2001
Agency for Healthcare Research and Quality (US)

36
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

37
by McDonagh, Marian S.
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center

38
by Helfand, Mark
Published 2009
Oregon Health & Science University

40
by Guise, Jeanne-Marie, Mahon, Susan, Aickin, Mikel, Helfand, Mark
Published 2001
Agency for Healthcare Research and Quality (US)