1. Centre for Development Support, University of the Free State, Bloemfontein, South Africa
2. Department of Anthropology, University of the Free State, Bloemfontein, South Africa
3. Departments of Psychiatry and Neurology & Ophthalmology, University of Michigan, Ann Arbor, East Lansing, Michigan, USA
4. School of Education, Bar-Ilan University, Ramat Gan, Israel
5. Department of Psychology, University of Houston Centre for Development Support, University of the Free State, Houston Bloemfontein, South Africa