1. Care and Public Health Research Institute (CAPHRI), Maastricht University/Maastricht University Medical Centre+, Maastricht, The Netherlands, LAICO, Aravind Eye Care System, Madurai, Tamil Nadu, India
2. BNM Institute of Technology, Bangalore, India
3. LAICO, Aravind Eye Care System, Madurai, Tamil Nadu, India
4. Maastricht University Medical Centre+, Maastricht, The Netherlands
5. Forus Health, Bangalore, Karnataka, India, Maastricht University Medical Centre+, Maastricht, The Netherlands
6. Care and Public Health Research Institute (CAPHRI), Maastricht University/Maastricht University Medical Centre+, Maastricht, The Netherlands