1. College of Medicine, King Saud University, Riyadh 11461, Saudi Arabia
2. Center for Stem Cell and Translational Immunotherapy (CSTI), Harvard Medical School, Boston, MA 02115, USA
3. Department of Neurosurgery, Brigham and Women’s Hospital, Boston, MA 02115, USA
4. Department of Pathology, College of Medicine, King Saud University, Riyadh 11461, Saudi Arabia
5. Department of Physiology, College of Medicine, King Saud University, Riyadh 11461, Saudi Arabia
6. Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
7. Infectious Disease Division, Department of Medicine, School of Medicine, Indiana University, Indianapolis, IN 46202, USA
8. Department of Medicine, Division of Infectious Diseases, College of Medicine, King Saud University, Riyadh 11461, Saudi Arabia