Affiliation: | 1. Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;2. Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;3. Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA;4. Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA |