Meeting report: mitochondrial DNA and cancer epidemiology.

Analytic Epidemiology Research Branch, National Cancer Institute, Rockville, Maryland; Departments of Medicine and Pediatrics, University of California, San Diego, California; Genomics for Longevity and Health, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan; Department of Biological and Environmental Sciences, University of the District of Columbia, Washington, District of Columbia; Centro Interdipartimentale ‘‘L. Galvani,’’ Università di Bologna, Bologna, Italy; and Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, New York