1. Institute of Global Health, University of Geneva, Geneva, Switzerland
2. Institute for Medical Information Processing, Biometry, and Epidemiology Medical Faculty, Ludwig Maximilians University, München, Germany
3. Department of Sociology, University of Cape Town, Rondebosch, South Africa
4. Social Work and Sociology, University of Zambia, Lusaka, Zambia
5. Disability Inclusion Project Luapula, International Labour Organisation, Lusaka, Zambia
6. Palm Associates Limited, Lusaka, Zambia
7. Economics and Agricultural Sciences, University of Zambia, Lusaka, Zambia