1. Department of Dermatology, Dr. Imkongliba Memorial District Hospital, Mokokchung, Nagaland, India,
2. Department of Dermatology and Venereology, Government Medical College, Kozhikode, Kerala, India,
3. Department of General Medicine, Government Medical College, Kozhikode, Kerala, India,
4. Department of Social and Preventive Medicine, Diphu Medical College and Hospital, Diphu, Assam, India,
5. Department of Social and Preventive Medicine, Government Medical College, Kozhikode, Kerala, India,