1. Department of Neurology, Nizam's Institute of Medical Sciences, Panjagutta, Hyderabad, India
2. Department of Neurology, University of California, San Francisco, CA, USA
3. Department of Microbiology, Nizam's Institute of Medical Sciences, Panjagutta, Hyderabad, India
4. Department of Neurology, Kurnool Medical College, Kurnool, India
5. Department of Neurology, NRI Medical College, Guntur, India
6. Department of Radiology, Nizam's Institute of Medical Sciences, Panjagutta, Hyderabad, India