1. University of Birmingham; Tommy’s National Centre for Miscarriage Research, Institute of Metabolism and Systems Research; C/o Academic Unit, 3rd Floor, Birmingham Women's Hospital Foundation Trust Mindelsohn Way Birmingham UK B15 2TG
2. University of Birmingham; School of Health and Population Sciences; Birmingham UK B15 2TG
3. University of Bristol; Bristol Medical School; Department of Women's and Children's Health The Chilterns Southmead Hospital UK BS10 5NB
4. 20 St Agnes Road Moseley Birmingham UK B13 9PW
5. University of Birmingham; School of Clinical and Experimental Medicine; C/o Academic Unit, 3rd Floor, Birmingham Women's Hospital Foundation Trust Mindelsohn Way Birmingham UK B15 2TG
6. Sandwell and West Birmingham NHS Trust; Department of Obstetrics and Gynaecology; City Hospital Dudley Road Birmingham UK B18 7QH
7. University of Birmingham; Institute of Applied Health Research; Edgbaston Birmingham West Midlands UK B15 2TT
8. World Health Organization; UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), Department of Reproductive Health and Research; 20 Avenue Appia Geneva Switzerland 1211
9. Walter Sisulu University, University of the Witwatersrand, Eastern Cape Department of Health; East London South Africa