1 Department of Pathology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.
2 Department of Neurosurgery, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.
3 Department of Medical Microbiology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.
4 Department of Histopathology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India. Electronic address: kirtigupta10@yahoo.co.in.