| Authors: |
Patel OP; Department of Epidemiology, UNC Gillings School of Public Health, Chapel Hill, NC., Lawrence KG; Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC., Parks CG; Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC., Bodkin M; Social & Scientific Systems, Inc., a DLH Holdings Company, Durham, NC., Jackson WB 3rd; Social & Scientific Systems, Inc., a DLH Holdings Company, Durham, NC., Engel LS; Department of Epidemiology, UNC Gillings School of Public Health, Chapel Hill, NC; Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC., Sandler DP; Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC. Electronic address: sandler@niehs.nih.gov. |