1. Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, St. Louis, Missouri 63110, United States
2. Department of Neurology, University of Alabama at Birmingham, Birmingham, Alabama 35249, United States
3. Doctor of Medicine Program, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53726, United States
4. Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama 35249, United States
5. Department of Pathology, Keck School of Medicine of the University of Southern California, Los Angeles, California 90033, United States