1. Department of Oral and Maxillofacial Pathology, Guru Nanak Institute of Dental Sciences and Research, JIS University, Kolkata, West Bengal, India
2. Department of Oral and Maxillofacial Pathology, Haldia Institute of Dental Sciences and Research, Haldia, West Bengal, India
3. Department of Oral Medicine and Radiology, Guru Nanak Institute of Dental Sciences and Research, Khardaha, West Bengal, India