1 Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
2 Dan Women and Babies Program, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.
3 Department of Obstetrics & Gynecology, University of North Carolina, Chapel Hill, North Carolina, USA.
4 The Cairns Institute, James Cook University, Cairns, Queensland, Australia.
5 Department of Public Health & Epidemiology, RCSI, Dublin, Ireland.
6 International Federation of Gynecology & Obstetrics, London, UK.
7 Birmingham Women's and Children's Hospital, Birmingham, UK.
8 Research Group Reproductive Medicine, Department of Development and Regeneration, Organ Systems, Group Biomedical Sciences, KU Leuven (University of Leuven), Leuven, Belgium.
9 Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, Connecticut, USA.
10 Global Medical Affairs Fertility, Research and Development, Merck Healthcare KGaA, Darmstadt, Germany.
11 Washington University in St Louis, St. Louis, Missouri, USA.
12 Oxford Maternal and Perinatal Health Institute, Oxford, UK.
13 Division of Maternal-Fetal Medicine, The University of Texas Medical Branch, Galveston, Texas, USA.
14 Department of Obstetrics and Gynaecology, The Rotunda Hospital, Dublin, Ireland.