1 Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, Birmingham and Midland Eye Centre and University of Birmingham, Birmingham, UK.
2 Royal College of Ophthalmologists, London, UK.
3 Moorfields Eye Hospital, London, UK.
4 Royal Liverpool University Hospital, Liverpool, UK.
5 Newcastle Royal Victoria Infirmary, Newcastle, UK.
6 Queen Elizabeth Hospital Birmingham, Birmingham, UK.
7 Serum Eye Drops Patient Focus and Support Group, Birmingham, UK.
8 NHS Blood and Transplant Tissue Services, Liverpool, UK.