1. Department of Rehabilitation Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
2. Department of Neurology, University of North Carolina School of Medicine, Chapel Hill, NC 27514, USA
3. McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
4. School of Public Health, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
5. Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX 75235, USA
6. Department of Neurology, Neurohospitalist & Stroke Section, University of Colorado School of Medicine, Aurora, CO 80045, USA
7. Department of Neurology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA