2
Published 1999
National Academy Press

5
by Coussens, Christine, Rusch, Erin
Published 2013
National Academies Press

6
by Pool, Robert
Published 2014
National Academies Press (US)

7
Published 2010
Department of Reproductive Health and Research, World Health Organization

8
Published 2008
National Academies Press

10
Published 1988
National Academy Press

11
by Bonnie, Richard J.
Published 1999
National Academy Press

12
Published 1998
National Academy Press

14
Published 2000
National Academy Press

15
by Watson, Ann Y.
Published 1988
National Academy Press

17
by Goldstein, Bernard D.
Published 2003
National Academies Press

18
Published 2004
National Academies Press

19
Published 1991
National Academy Press