About the Authors

Heng Tao

Affiliation Perlegen Sciences, Mountain View, California, United States of America

Anthony J. Berno

Affiliation Perlegen Sciences, Mountain View, California, United States of America

David R. Cox

Affiliation Perlegen Sciences, Mountain View, California, United States of America

Kelly A. Frazer

To whom correspondence should be addressed. E-mail: kfrazer@scripps.edu

Affiliation Perlegen Sciences, Mountain View, California, United States of America

Competing Interests

The authors have the following financial competing interests: Heng Tao, Anthony J. Berno, and David R. Cox are employed by Perlegen Sciences, Inc.. Kelly A. Frazer is a former employee of Perlegen Sciences, Inc.

Author Contributions

Conceived and designed the experiments: KF DC. Performed the experiments: HT. Analyzed the data: KF HT AB. Wrote the paper: KF.