About the Authors

Deanna Lee

Affiliations Department of Laboratory Medicine, University of San Francisco, San Francisco, California, United States of America, University of California San Francisco-Abbott Viral Diagnostics and Discovery Center, University of California San Francisco, San Francisco, California, United States of America

Jaydip Das Gupta

Affiliation Cleveland Clinic, Cleveland, Ohio, United States of America

Christina Gaughan

Affiliation Cleveland Clinic, Cleveland, Ohio, United States of America

Imke Steffen

Affiliation Blood Systems Research Institute, San Francisco, California, United States of America

Ning Tang

Affiliation Abbott Laboratories, Abbott Park, Illinois, United States of America

Ka-Cheung Luk

Affiliation Abbott Laboratories, Abbott Park, Illinois, United States of America

Xiaoxing Qiu

Affiliation Abbott Laboratories, Abbott Park, Illinois, United States of America

Anatoly Urisman

Affiliation Department of Laboratory Medicine, University of San Francisco, San Francisco, California, United States of America

Nicole Fischer

Affiliation University Medical Center Hamburg-Eppendorf, Hamburg, Germany

Ross Molinaro

Affiliation Emory University School of Medicine, Atlanta, Georgia, United States of America

Miranda Broz

Affiliation Department of Laboratory Medicine, University of San Francisco, San Francisco, California, United States of America

Gerald Schochetman

Affiliation Abbott Laboratories, Abbott Park, Illinois, United States of America

Eric A. Klein

Affiliation Cleveland Clinic, Cleveland, Ohio, United States of America

Don Ganem

Affiliation Novartis Institutes for Biomedical Research, Emeryville, California, United States of America

Joseph L. DeRisi

Affiliations Department of Biochemistry and Biophysics, University of California San Francisco, San Francisco, California United States of America, Howard Hughes Medical Institute, Chevy Chase, Maryland, United States of America

Graham Simmons

Affiliation Blood Systems Research Institute, San Francisco, California, United States of America

John Hackett Jr

Affiliation Abbott Laboratories, Abbott Park, Illinois, United States of America

Robert H. Silverman

Affiliation Cleveland Clinic, Cleveland, Ohio, United States of America

Charles Y. Chiu

charles.chiu@ucsf.edu

Affiliations Department of Laboratory Medicine, University of San Francisco, San Francisco, California, United States of America, University of California San Francisco-Abbott Viral Diagnostics and Discovery Center, University of California San Francisco, San Francisco, California, United States of America, Department of Medicine, Division of Infectious Diseases, University of California San Francisco, San Francisco, California, United States of America

Competing Interests

JDG, EK, JD, RS, KL, XQ and JH are included as inventors on one or more of the following published XMRV-related patent applications which include either the Cleveland Clinic, Abbott Laboratories, or both the Cleveland Clinic and Abbott Laboratories as assignees: International Publication Numbers WO2011/002932; WO2011/002936; WO2010/075414; WO2006/110589; WO2012/024518 and WO2012/024513. Abbott is the sole assignee of issued United States Patent No. 8,183,349 relating to XMRV. NT, KL, XQ, GS and JH are employees of Abbott Laboratories. DG is an employee of Novartis Institutes for Biomedical Research. These potential competing interests do not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: DL JD G. Simmons JH RS CC. Performed the experiments: DL JDG CG IS NT KL XQ MB. Analyzed the data: DL CG IS NT KL XQ RM AU G. Simmons JH RS CC. Contributed reagents/materials/analysis tools: DL CG IS NT KL XQ AU G. Schochetman JD G. Simmons JH RS CC. Wrote the paper: DL IS KL RM NF DG EK JD G. Simmons JH RS CC.