1Division of Cancer Epidemiology and Genetics, The National Cancer Institute, Rockville, MD

2Sexual and Gender Minority Research Office, The National Institutes of Health, Bethesda, MD

Reprint requests to: Sarah S. Jackson, PhD, Infections and Immunoepidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, 9609 Medical Center Dr, Rockville, MD 20850. E-mail: [email protected]

The authors have declared they have no conflicts of interest.

This work was supported by the Intramural Research Program of the Division of Cancer Epidemiology and Genetics, The National Cancer Institute.