1. Department of Periodontology, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, India;
2. Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, India;
3. Department of Oral Pathology, Sudha Rustagi College of Dental Sciences & Research, Faridabad, India