About the Authors

Benjamin L. Hart

blhart@ucdavis.edu

Affiliation Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California Davis, Davis, California, United States of America

Lynette A. Hart

Affiliation Department of Population Health and Reproduction, School of Veterinary Medicine, University of California Davis, Davis, California, United States of America

Abigail P. Thigpen

Affiliation Department of Population Health and Reproduction, School of Veterinary Medicine, University of California Davis, Davis, California, United States of America

Neil H. Willits

Affiliation Department of Statistics, University of California Davis, Davis, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BLH LAH. Performed the experiments: APT BLH LAH. Analyzed the data: NHW APT BLH LAH. Wrote the paper: BLH LAH APT. Edited manuscript: NHW.