1. School of Community Health and Midwifery; University of Central Lancashire; Preston UK
2. Cochrane Pregnancy and Childbirth Group, Department of Women's and Children's Health; University of Liverpool; Liverpool UK
3. School of Nursing and Midwifery; Western Sydney University; Penrith Australia
4. Effective Care Research Unit; University of the Witwatersrand/University of Fort Hare/East London Hospital complex; East London South Africa
5. Faculty of Health and Wellbeing; University of Central Lancashire; Preston UK
6. Research in Childbirth and Health (ReaCH) unit; University of Central Lancashire; Preston UK