About the Authors

Stephen C. Bishop

Stephen.Bishop@roslin.ed.ac.uk

Affiliation The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Roslin, Midlothian, United Kingdom

John A. Woolliams

Affiliation The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Roslin, Midlothian, United Kingdom

Competing Interests

S.C.B. has on one occasion served as an academic editor (08-PONE-RA-04516) for a Plos One paper.

Author Contributions

Conceived and designed the experiments: SCB JAW. Performed the experiments: SCB JAW. Analyzed the data: SCB. Contributed reagents/materials/analysis tools: JAW. Wrote the paper: SCB.