1. Department of Marine Sciences, University of Connecticut, Groton, CT, USA
2. School of Medicine, University of Connecticut, Storrs, CT, USA
3. Faculty of Medicine, Kandy Teaching Hospital, University of Peradeniya, Kandy, Sri Lanka
4. Department of Geology, University of Peradeniya, Kandy, Sri Lanka
5. School of Medicine, Stanford University, Stanford, CA, USA
6. Department of Sociology, University of Peradeniya, Kandy, Sri Lanka
7. Institute for Community Research, Hartford, CT, USA