2
Published 2008
National Academies Press

3
Published 2005
U.S. Dept. of Health & Human Services, Office of the Surgeon General

4
Published 2009
National Academies Press

5
Published 2011
National Academies Press

6
Published 2004
National Academies Press

7
Published 2000
National Academy Press

8
by Kirkendall, Nancy J.
Published 2013
The National Academies Press

9
by Hernandez, Donald J.
Published 1998
National Academy Press

10
by Citro, Constance F.
Published 1998
National Academy Press

11
by Reed, Holly
Published 2000
National Academy Press

12
by Gilford, Dorothy M.
Published 1988
National Academy Press

13
Published 1996
National Academy Press

14
Published 1988
National Academy Press

15
Published 1991
National Academy Press

17
Published 1992
National Academy Press

18
Published 1991
National Academy Press

19
Published 1998
National Academy Press

20
by Jonsen, Albert R.
Published 1993
National Academy Press