1 Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
2 Department of Medical Microbiology, Postgraduate Institute of Medical Education and Research, Chandigarh; Department of Microbiology, AIIMS, Bilaspur, Himachal Pradesh, India.
3 Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
4 Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
5 Department of Mycobacteriology and Mycology, Bureau of Public Health Laboratories , Jacksonville, Florida, USA.