1. Department of Midwifery Science; VU University Medical Center Amsterdam; Amsterdam Public Health Research Institute; Amsterdam The Netherlands
2. Department of General Practice & Elderly Care Medicine; University Medical Center Groningen; University of Groningen; Groningen The Netherlands
3. AVAG Midwifery Academy Amsterdam Groningen; Amsterdam/Groningen The Netherlands
4. College of Nursing and Health Sciences Adelaide; Flinders University; Adelaide SA Australia
5. School of Public Health; University College Cork; Cork Ireland
6. The Irish Centre for Fetal and Neonatal Translational Research; University College Cork (INFANT); Cork Ireland
7. Westmead Newborn Intensive Care Unit; Westmead Hospital; University of Sydney; Sydney NSW Australia
8. University of Central Lancashire; Preston Lancashire UK
9. School of Nursing and Midwifery Sydney; Western Sydney University; Sydney NSW Australia
10. Affiliate of the Ingham Institute; Liverpool NSW Australia
11. National Institute of Complementary Medicine; Western Sydney University; Sydney NSW Australia