1. Baylor College of Medicine, Houston, TX, USA
2. Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
3. Department of Physical Medicine and Rehabilitation, The University of Texas Health Science Center at Houston, Houston, TX, USA
4. Department of Psychiatry and Behavioral Sciences and Center for Medical Ethics and Health Policy, Baylor College of Medicine, Houston, TX, USA
5. Department of Rehabilitation Medicine, The University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA