1. Department of Dermatology, Raiganj Government Medical College and Hospital, Uttar Dinajpur, West Bengal, India

2. Department of Dermatology, Purulia Government Medical College and Hospital, West Bengal, India

3. Department of Dermatology, College of Medicine and Sagore Dutta Hospital, Kolkata, West Bengal, India

4. Department of Dermatology, Medical College and Hospital, Kolkata, West Bengal, India