1. Department Critical Care and Neurology, Tropical Medicine, Stroke Medicine, Institute of Neurosciences, Kolkata, West Bengal, India
2. Department of Infectious Diseases and Advanced Microbiology, Calcutta School of Tropical Medicine, Kolkata, West Bengal, India
3. Department of Neurology, Institute of Neurosciences, Kolkata, West Bengal, India
4. Department of Microbiology, Drs. Tribedi and Roy Diagnostic Laboratory, Kolkata, West Bengal, India