1. Faculty of MedicineUniversity of Iceland Reykjavik Iceland
2. Department of Obstetrics and GynecologyLandspitali ‐The National University Hospital of Iceland Reykjavik Iceland
3. Blood BankLandspitali ‐The National University Hospital of Iceland Reykjavik Iceland
4. Department of PediatricsLandspitali ‐The National University Hospital of Iceland Reykjavik Iceland