1. Department of Medical Genetics Poznan University of Medical Sciences Poznan Poland
2. Department of Pediatric Nephrology Medical University of Warsaw Warsaw Poland
3. Department of Obstetrics and Gynecology Institute of Mother and Child Warsaw Poland
4. Department of Pathology and Laboratory Medicine Dalhousie University Halifax Nova Scotia Canada
5. IWK Health Centre Clinical Genomics Laboratory Halifax Nova Scotia Canada
6. Department of Medical Genetics Institute of Mother and Child Warsaw Poland