1. Department of Medicine, James J. Peters VA Medical Center, Bronx, NY, USA
2. Department of Biology, University of Alabama at Birmingham, Birmingham, AL, USA
3. Department of Medicine, SUNY Downstate School of Medicine, Brooklyn, NY, USA
4. Department of Medicine, University of Louisville, Louisville, KY, USA
5. Department of Medicine, The Ohio State University Medical Center, Columbus, OH, USA
6. Department of Medicine and Radiology, University of Alabama at Birmingham, Birmingham, AL, USA