1. Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics (DCEG), National Cancer Institute (NCI), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Rockville, Maryland, USA
2. Biostatistics Branch, DCEG, NCI, NIH, DHHS, Rockville, Maryland, USA
3. Occupational and Environmental Epidemiology Branch, DCEG, NCI, NIH, DHHS, Rockville, Maryland, USA