21
Published 1998
National Academy Press

22
by Stern, Paul C.
Published 2000
National Academy Press

23
Published 2000
National Academy Press

24
by Pellmar, T. C.
Published 2000
National Academy Press

25
by Singer, Burton
Published 2001
National Academy Press

26
by Cook, Deborah
Published 2000
The Agency

27
Published 2001
U.S. Dept. of Health and Human Services, Public Health Service, Office of the Surgeon General

28
Published 2001
Dept. of Health and Human Services, U.S. Public Health Service

29
by Pool, Robert
Published 2000
National Academy Press

30
Published 2001
U.S. Dept. of Health and Human Services, Public Health Service

36
by Davies, Sheryl M.
Published 2001
Agency for Healthcare Research and Quality

37
by Holzheimer, R.
Published 2001
Zuckschwerdt

38
by Mobley, Harry L. T.
Published 2001
ASM Press

40
Published 2001
Dept. of Health and Human Services, U.S. Public Health Service