1. Department of Gynecology and Obstetrics; Danube Hospital; Vienna Austria
2. Department of Pathology; BC Children's Hospital; Vancouver Canada
3. Department of Obstetrics and Gynecology, Division of Gynecologic Endocrinology and Reproductive Medicine; Medical University of Vienna; Vienna Austria
4. Department of Pathology, Cytogenetic Laboratory; Danube Hospital; Vienna Austria
5. Kinderwunschzentrum Döbling; Vienna Austria