1
by Balk, Ethan, Lau, Joseph
Published 2002
Agency for Healthcare Research and Quality

2
by Balk, Ethan
Published 2016
Agency for Healthcare Research and Quality

4
by Balk, Ethan
Published 2016
Agency for Healthcare Research and Quality, U.S. Department of Health and Human Services

5
by Balk, Ethan, Earley, Amy, Hadar, Nira, Shah, Nirav
Published 2014
Agency for Healthcare Research and Quality, U.S. Department of Health and Human Services

6
by Balk, Ethan
Published 2006
U.S. Dept. of Health and Human Services, Agency for Healthcare Research and Quality

9
by Balk, Ethan
Published 2012
Agency for Healthcare Research and Quality

11
by Balk, Ethan
Published 2020
Agency for Healthcare Research and Quality (US)

12
by Balk, Ethan
Published 2016
Agency for Healthcare Research and Quality, U.S. Department of Health and Human Services

13
by Balk, Ethan
Published 2006
Agency for Healthcare Research and Quality

15
by Balk, Ethan
Published 2011
Agency for Healthcare Research and Quality

16
by Balk, Ethan
Published 2011
Agency for Healthcare Research and Quality

17
by Balk, Ethan
Published 2006
Agency for Healthcare Research and Quality

18
by Balk, Ethan
Published 2012
Agency for Healthcare Research and Quality, U.S. Department of Health and Human Services

20
by Balk, Ethan
Published 2005
Agency for Healthcare Research and Quality