1. Departments of Growth and Reproduction (G.L., A.J., J.E.N., N.J., N.E.S., E.R.-D.M.), DK-2100 Copenhagen, Denmark
2. Clinical Genetics (M.D.), Rigshospitalet, University Hospital of Copenhagen, DK-2100 Copenhagen, Denmark
3. Division of Toxicology and Risk Assessment (A.M.V.), National Food Institute, Technical University of Denmark, DK-2860 Søborg, Denmark