1. Department of Medical Microbiology; Postgraduate Institute of Medical Education and Research; Chandigarh India
2. Department of Otolaryngology; Postgraduate Institute of Medical Education and Research; Chandigarh India
3. Department of Histopathology; Postgraduate Institute of Medical Education and Research; Chandigarh India
4. Department of Community Medicine; Postgraduate Institute of Medical Education and Research; Chandigarh India