1. Department of Dermatology & STD; University College of Medical Sciences and Guru Teg Bahadur Hospital; Shahdara Delhi 110095 India
2. Department of Biostatistics; University College of Medical Sciences and Guru Teg Bahadur Hospital; Shahdara Delhi 110095 India
3. Department of Pathology; University College of Medical Sciences and Guru Teg Bahadur Hospital; Shahdara Delhi 110095 India