1. Department of Sociology, University of Ruhuna, Matara, Sri Lanka
2. School of Humanities, Social Sciences and Law, University of Dundee, Dundee, UK
3. Department of Sociology, University of Stockholm, Stockholm, Sweden
4. Department of Agricultural Engineering and Environmental Technology, University of Ruhuna, Matara, Sri Lanka
5. Department of Biosystem Technology, University of Ruhuna, Matara, Sri Lanka