1. Department of Microbial Biotechnology; Panjab University; Chandigarh India
2. Department of Biophysics; Panjab University; Chandigarh India
3. Department of Medical Microbiology; Postgraduate Institute of Medical Education and Research; Chandigarh India
4. Department of Pulmonary Medicine; Postgraduate Institute of Medical Education and Research; Chandigarh India