Big questions for a bigger data set

Affiliations

• ¹ Epidemiology Branch, Division of Intramural Research, National Institute of Environmental Health Sciences, 111 TW Alexander Dr., Research Triangle Park, Durham, NC 27709. Electronic address: kelly.ferguson2@nih.gov.
• ² Epidemiology Branch, Division of Intramural Research, National Institute of Environmental Health Sciences, 111 TW Alexander Dr., Research Triangle Park, Durham, NC 27709.
• ³ Division of Maternal-Fetal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.