1. Department of Clinical Genetics, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
2. Department of Clinical Genetics, Aalborg University Hospital, Aalborg, Denmark
3. Center for Preimplantation Genetic Testing, Aalborg University Hospital, Aalborg, Denmark
4. Danish Polyposis Registry, Hvidovre Hospital, Gastro Unit, Hvidovre, Denmark
5. Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
6. The Fertility Department, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark