aDivision of HIV Prevention, National Center for HIV, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA; and

bUniversity of Massachusetts Amherst, Amherst, MA.

Correspondence to: Anne Marie France, PhD, MPH, 1600 Clifton Rd., NE, Mailstop H24-5, Atlanta, GA 30329, (e-mail: [email protected]).

C.G. was supported by a grant from the National Institute of Allergy and Infectious Diseases of the National Institutes of Health under Award Number R01AI127236. The funding agreement ensured the authors' independence in designing the study, interpreting the data, writing, and publishing the report.

The authors have no other funding or conflicts of interest to disclose.

Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's Web site (www.jaids.com).

The findings and conclusions in this report are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention.