1
by Humphrey, Linda L., Chan, Benjamin, Detlefsen, Stephanie, Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)
Subjects: ...Clinical Trials as Topic...

2
by Humphrey, Linda L., Chan, Benjamin, Detlefsen, Stephanie, Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)
Subjects: ...Clinical Trials as Topic...

3
by Helfand, Mark
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center
Subjects: ...Clinical Trials as Topic...

4
by Helfand, Mark
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center
Subjects: ...Clinical Trials as Topic...

5
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center
Subjects: ...Clinical Trials as Topic...

6
by Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality (US)
Subjects: ...Randomized Controlled Trials as Topic...

7
by Helfand, Mark
Published 2004
Agency for Healthcare Research and Quality (US)
Subjects: ...Randomized Controlled Trials as Topic...

8
by Helfand, Mark
Published 2009
Oregon Health & Science University
Subjects: ...Clinical Trials as Topic...

9
by Helfand, Mark
Published 2009
Oregon Health & Science University
Subjects: ...Clinical Trials as Topic...

10
by Helfand, Mark
Published 2007
Oregon Health & Science University
Subjects: ...Clinical Trials as Topic...

11
by Helfand, Mark
Published 2009
Oregon Health & Science University
Subjects: ...Clinical Trials as Topic...

12
by Helfand, Mark
Published 2009
Oregon Health & Science University
Subjects: ...Clinical Trials as Topic...

13
by Helfand, Mark
Published 2007
Oregon Health & Science University
Subjects: ...Clinical Trials as Topic...

14
by Chandler, Chris
Published 2005
Oregon Health & Science University, Evidence-Based Practice Center
Subjects: ...Clinical Trials as Topic...

15
by Chou, Roger
Published 2007
Oregon Health & Science University
Subjects: ...Clinical Trials as Topic...

16
by Chou, Roger
Published 2007
Oregon Health & Science University
Subjects: ...Clinical Trials as Topic...

17
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center
Subjects: ...Clinical Trials as Topic...

18
by Helfand, Mark
Published 2006
Oregon Health & Science University, Evidence-Based Practice Center
Subjects: ...Clinical Trials as Topic...