1. Department of Dermatology, Venereology and Allergology, The Clinical Research Center for Hair and Skin Science, Charité – Universitätsmedizin Berlin, Berlin, Germany,
2. Department of Dermatology, Venereology and Leprosy, Jawaharlal Nehru Medical College, Datta Meghe Institute of Medical Sciences, Wardha, Maharashtra, India
3. Department of Dermatology and Hair Restoration, Hi-tech Skin Clinic and Hair Transplant, Nagpur, Maharashtra, India,
4. Department of Dermatology, Shri Ram Yadav Skin Clinic, Narnaul, Haryana, India,