1. Department of Neurosurgery, McGovern Medical School, The University of Texas Health Science Center, Houston, TX
2. Chicago Medical School, Rosalind Franklin School of Medicine and Science, North Chicago, IL
3. Lone Star Family Health Center, Conroe, TX
4. Department of Neurology, McGovern Medical School, The University of Texas Health Science Center, Houston, TX
5. Department of Pathology, McGovern Medical School, The University of Texas Health Science Center, Houston, TX
6. Department of Diagnostic and Interventional Imaging, McGovern Medical School, The University of Texas Health Science Center, Houston, TX