Search alternatives:
observational context » observational concepts, observational contacts, observation content
observational cinema » observational clinical, observational economy, observational clues
Cover Image
Read Now

1
by Helfand, Mark, Carson, Susan
Published 2008
Agency for Healthcare Research and Quality (US)
“...: Randomized controlled trials and observational studies published between December 1999 and February 2005...”
Cover Image
Read Now

2
by Helfand, Mark, Carson, Susan
Published 2008
Agency for Healthcare Research and Quality (US)
“...: Randomized controlled trials and observational studies published between December 1999 and February 2005...”
Cover Image
Read Now

3
by Helfand, Mark
Published 2001
Agency for Healthcare Research and Quality (US)
“...STUDY SELECTION: We included controlled and observational studies of (1) the accuracy, yield...”
Cover Image
Read Now

4
by Helfand, Mark
Published 2001
Agency for Healthcare Research and Quality (US)
“...STUDY SELECTION: We included controlled and observational studies of (1) the accuracy, yield...”
Cover Image
Read Now

5
by Humphrey, Linda L., Chan, Benjamin, Detlefsen, Stephanie, Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)
“...CONTEXT: Breast cancer is the most commonly occurring non-skin malignancy among women in the United...”
Cover Image
Read Now

6
by Humphrey, Linda L., Chan, Benjamin, Detlefsen, Stephanie, Helfand, Mark
Published 2002
Agency for Healthcare Research and Quality (US)
“...CONTEXT: Breast cancer is the most commonly occurring non-skin malignancy among women in the United...”