Affiliation: | Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research, Chandigarh, India, Corresponding author, Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research, Chandigarh 160012, India, tel. +91 172 2756561;fax +91 172 2744401;E-mail: |