1. Department of Ophthalmology, Szpital Klinczny im. Prof. W. Orłowskiego, Warsaw, Poland
2. Daeyang Luke Hospital, Lilongwe, Malawi
3. Lighthouse Trust, Lilongwe, Malawi
4. Department of Global Health, University of Washington, Seattle, USA
5. Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
6. Department of Public Health, College of Medicine, School of Public Health and Family Medicine, University of Malawi, Malawi