1. Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA, USA
2. Barshop Institute and Department of Pathology, University of Texas Health Science Center at San Antonio; Research Service and Geriatric Research and Education Clinical Center, Audie L. Murphy VA Hospital, South Texas Veterans Health Care System, San Antonio, TX, USA
3. Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
4. The Jackson Laboratory, Bar Harbor, ME, USA
5. Global VetPathology, Montgomery Village, MD, USA