1
Published 2013
Royal College of Obstetricians and Gynaecologists

2
Published 2013
Royal College of Obstetricians and Gynaecologists

3
Published 2013
Royal College of Obstetricians & Gynaecologists

4
Published 2015
National Collaborating Centre for Women's and Children's Health

5
Published 2015
National Collaborating Centre for Women's and Children's Health

6
Published 2015
National Institute for Health and Care Excellence

11
Published 2004
RCOG Press

13
Published 2011
RCOG Press at the Royal College of Obstetricians and Gynaecologists

17
Published 2011
Royal College of Obstetricians and Gynaecologists

19
Published 2008
RCOG Press