1. University Department of Growth and Reproduction (R.B.J., A.J.), Rigshospitalet, DK-2100 Copenhagen, Denmark
2. University Department of Neonatology (S.V., G.G.), Rigshospitalet, DK-2100 Copenhagen, Denmark
3. Department of Gynaecology and Obstetrics (T.L.), Holbaek Sygehus, Sygehus Vestsjaelland, DK-4300 Holbaek, Denmark
4. Division of Endocrinology and Metabolism (J.V.), Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota 55905