S Dogra1, K Vinay1, U N Saikia2, D De1, S Handa1. 1. Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research (PGIMERS), Chandigarh, India. 2. Department of Histopathology, Postgraduate Institute of Medical Education and Research (PGIMERS), Chandigarh, India.