1 Department of Dermatology, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth (Deemed to be University) Pillayarkuppam, Puducherry, India.
2 Department of Dermatology, National Institute of Medical Sciences, Jaipur, Rajasthan, India.
3 Department of Dermatology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.