1. Department of Medicine, University of California San Francisco, San Francisco, CA;
2. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD;
3. Department of Pathology and Laboratory Medicine, Brown University, Providence, RI;
4. Department of Medicine, Stroger Hospital, Cook County Health, Chicago, IL;
5. Department of Neurology, State University of New York Downstate Health Sciences University, Brooklyn, NY;
6. Department of Medicine, Georgetown University Medical Center, Washington, DC;
7. Department of Medicine, Albert Einstein College of Medicine, Bronx, NY; and
8. Medical Service, Department of Veteran Affairs Medical Center, San Francisco, CA.