1. Regional Epidemiology Unit; Regional Director of Health Services Office; Polonnaruwa Sri Lanka
2. Dermatology Unit; General Hospital; Polonnaruwa Sri Lanka
3. Department of Community Medicine; Faculty of Medicine and Allied Sciences; Rajarata University of Sri Lanka; Saliyapura Sri Lanka
4. Department of Medicine; Faculty of Medicine and Allied Sciences; Rajarata University of Sri Lanka; Saliyapura Sri Lanka