1. Department of Immunopathology; Postgraduate Institute of Medical Education and Research; Chandigarh India
2. Institute of Microbial Technology; Chandigarh India
3. University of Hyderabad; Hyderabad India
4. Department of Internal Medicine; Postgraduate Institute of Medical Education and Research; Chandigarh India
5. Department of Pulmonary Medicine; Postgraduate Institute of Medical Education and Research; Chandigarh India
6. Department of Otolaryngology; Postgraduate Institute of Medical Education and Research; Chandigarh India
7. Department of Nephrology; Postgraduate Institute of Medical Education and Research; Chandigarh India