1. Department of Oral Pathology and microbiology, Regional Dental College, Gauhati university, Guwahati, India.
2. Department of Oral Pathology and microbiology, Vananchal Dental college and hospital, Nilamber Pitamber university, Garhwa India
3. Department of Oral and Maxillofacial Pathology, Vananchal Dental college and hospital Nilamber Pitamber university, Garhwa India.
4. Department of Oral and Maxillofacial Surgery, Hazaribagh Dental college Vinoba Bhabe university, Hazaribagh India.
5. Department of Microbiology, Rajendra Institute of medical science, Ranchi University, Ranchi, India.