1. CNRS UMR 8090 Institute of Biology, Pasteur Institute of Lille and Lille 2 Droit et Santé University, 59019 Lille, France.
2. Department of Human Genetics, Faculty of Medicine, McGill University and Génome Québec Innovation Centre, Montreal H3A 1A4, Canada.
3. Gene Expression Unit, Department of Molecular Cell Biology, Katholieke Universiteit, B-3000 Leuven, Belgium.
4. Department of Obstetrics and Gynaecology, 90014 Oulu, Finland.
5. Department of Epidemiology and Public Health, Imperial College, London W2 1PG, UK.