2
by Bassarak, Herbert
Published 2015
Nomos Verlagsgesellschaft mbH & Co. KG

3
by Matiaske, Wenzel
Published 2017
Nomos Verlagsgesellschaft mbH & Co. KG

4
Published 2016
Tampere University Press

5
Published 2005
U.S. Dept. of Health & Human Services, Office of the Surgeon General

6
Published 2004
National Academies Press

7
by Hernandez, Donald J.
Published 1998
National Academy Press

8
by Citro, Constance F.
Published 1998
National Academy Press

9
by Gilford, Dorothy M.
Published 1988
National Academy Press

10
Published 1988
National Academy Press

11
Published 1991
National Academy Press

12
Published 1998
National Academy Press

13
by Jonsen, Albert R.
Published 1993
National Academy Press

14
Published 1996
National Academy Press

15
Published 2004
National Academies Press

16
Published 2009
RCOG Press

17
Published 2012
World Health Organization

18
Published 1989
National Academy Press

19
Published 1998
National Academy Press

20
Published 2002
National Academies Press