1. Department of Epidemiology Research, Statens Serum Institut, and Danish Cancer Society Research Center, Copenhagen, Denmark (G.C., J.W.)
2. Danish Cancer Society Research Center and Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark; K.G. Jebsen Center for Genetic Epidemiology, Norwegian University of Science and Technology, Trondheim, Norway; and Department of Genetics, Stanford University School of Medicine, Stanford, California (M.M.)
3. Department of Health Policy and Department of Medicine, Stanford University School of Medicine, Stanford, California (M.A.H.)
4. Department of Epidemiology Research, Statens Serum Institut; Department of Clinical Medicine, University of Copenhagen; and Department of Clinical Pharmacology, Copenhagen University Hospital – Bispebjerg and Frederiksberg, Copenhagen, Denmark (M.L.).