1 Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research Chandigarh, India.
2 Chesterfield Royal Hospital, Calow, Chesterfield, United Kingdom.
3 Division of Dermatology, Department of Medicine, Albert Einstein College of Medicine, Bronx, New York.
4 Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research Chandigarh, India. Electronic address: vinay.keshavmurthy@gmail.com.