About the Authors

W. David Wick

To whom correspondence should be addressed. E-mail: wick@scharp.org

Affiliation Statistical Center for HIV and AIDS Research and Prevention, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America

Peter B Gilbert

Affiliation Statistical Center for HIV and AIDS Research and Prevention, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America

Steven G Self

Affiliation Statistical Center for HIV and AIDS Research and Prevention, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

WDW, PBG, and SGS wrote the paper.