Igf-I genetic variation and breast cancer: the multiethnic cohort.

Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California; Program in Medical and Population Genetics, Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts; Departments of Genetics, Medicine, and Pediatrics, Harvard Medical School; Department of Molecular Biology, Diabetes Unit, and Hematology-Oncology, Massachusetts General Hospital; Division of Genetics and Endocrinology, Children’s Hospital and Department of Pediatrics, Boston, Massachusetts; and Cancer Etiology Program, Cancer Research Center of Hawaii, University of Hawaii, Honolulu, Hawaii