Buchan J C, Barnes B, Cassels-Brown A, Chang B Y, Harcourt J, Pilling R F, Shickle D, Spencer A F, Vernon S A, MacEwen C
International Centre for Eye Health, London School of Hygiene and Tropical Medicine, London, UK.
The Royal College of Ophthalmologists, London, UK.
Eye (Lond). 2017 Nov;31(11):1515-1518. doi: 10.1038/eye.2017.113. Epub 2017 Jun 16.