1 Department of Gynaecology and Obstetrics, Endocrinological and Reproductive Unit, Copenhagen University Hospital, Herlev Hospital, Herlev, Copenhagen, Denmark.
2 The Fertility Department, Copenhagen University Hospital, Copenhagen, Denmark.
3 Fertility Clinic, Department of Gynaecology and Obstetrics, University Hospital of Region Zealand, Køge, Denmark.
4 London Women's Clinic, London, UK.
5 Laboratory of Reproductive Biology, Copenhagen University Hospital, Copenhagen, Denmark.