1. Department of Internal Medicine, University of Texas Southwestern Medical School Residency Programs at Austin, University Medical Center Brackenridge, Austin, TX 78701, USA
2. Department of Neurology, University of Texas Southwestern Medical School Residency Programs at Austin, University Medical Center Brackenridge, Austin, TX 78701, USA
3. Transitional Program, University of Texas Southwestern Medical School Residency Programs at Austin, University Medical Center Brackenridge, Austin, TX 78701, USA
4. School of Medicine, University of Texas Medical Branch, Galveston, TX 77555, USA