1. Global Animal Welfare and Training, Charles River, Wilmington, Massachusetts
2. Ocular and Neuroscience, Charles River, Senneville, Quebec, Canada
3. Reporting and Technical Services, Charles River, Ashland, Ohio
4. Global Animal Welfare and Training, Charles River, Wilmington, Massachusetts; Department of Pathobiology, University of Guelph, Guelph, Ontario, Canada;, Email: pvturner@uoguelph.ca