1. Department of Community Medicine, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
2. Department of Psychiatry, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
3. Department of Mathematics, Postgraduate Institute of Science, University of Peradeniya, Peradeniya, Sri Lanka
4. Department of ICT, Faculty of Technology, Rajarata University of Sri Lanka, Mihintale, Sri Lanka