1. Department of Dermatology, Skinacea - Hair, Skin and Laser Clinic, Dr. Chawla’s MediLife Hospital, Faridabad, India
2. Department of Dermatology, University College of Medical Sciences, New Delhi, Delhi, India,
3. Department of Dermatology and STD, University College of Medical Sciences and Guru Teg Bahadur Hospital, New Delhi, Delhi, India,