1. BP Koirala Lions Center for Ophthalmic Studies, Kathmandu, Nepal,
2. School of Optometry and Vision Science, Faculty of Medical and Health Science, University of Auckland, Auckland, New Zealand,
3. Department of Clinical Research, International Centre for Eye Health, London School of Hygiene & Tropical Medicine, London, United Kingdom,
4. Sagarmatha Chaudhary Eye Hospital, Lahan, Nepal,