1
Published 2017
National Institute for Health and Care Excellence

2
Published 2013
Royal College of Obstetricians and Gynaecologists

3
Published 2013
Royal College of Obstetricians & Gynaecologists

4
Published 2013
Royal College of Obstetricians & Gynaecologists

5
Published 2013
Royal College of Obstetricians and Gynaecologists

6
Published 2017
National Institute for Health and Care Excellence

7
Published 2017
National Institute for Health and Care Excellence

9
Published 2017
National Institute for Health and Care Excellence

10
Published 2013
Royal College of Obstetricians and Gynaecologists

12
Published 2017
National Institute for Health and Care Excellence

13
Published 2017
National Institute for Health and Care Excellence

14
Published 2016
National Institute for Health and Care Excellence

16
Published 2013
Royal College of Obstetricians and Gynaecologists

17
Published 2017
National Institute for Health and Care Excellence

18
Published 2017
National Institute for Health and Care Excellence

19
Published 2017
National Institute for Health and Care Excellence

20
Published 2018
National Institute for Health and Care Excellence