1. Research Center Reproduction and Genetics, University Hospital and Medical School of the “Vrije Universiteit Brussel” (Free University of Brussels), Brussels, Belgium
2. Center for Medical Genetics, University Hospital and Medical School of the “Vrije Universiteit Brussel” (Free University of Brussels), Brussels, Belgium
3. Center for Reproductive Medicine, University Hospital and Medical School of the “Vrije Universiteit Brussel” (Free University of Brussels), Brussels, Belgium