1. From the PROSE Study Group; the Center for Clinical Epidemiology and Biostatistics, Abramson Family Cancer Research Institute, The University of Pennsylvania; and Fox Chase Cancer Center, Philadelphia, PA; Creighton University, Omaha, NE; Division of Genetic Epidemiology, Department of Medicine, University of California Irvine, Irvine, CA; Women’s College Hospital, Toronto, Ontario, Canada; the Netherlands Cancer Institute, Amsterdam, the Netherlands; Dana-Farber Cancer Institute, Boston, MA; St. Mary’s...