[1] University of Liverpool,Department of Eye and Vision Science, Institute of Life Course and Medical Sciences
[2] Member of Liverpool Health Partners,St Paul’s Eye Unit
[3] Liverpool University Hospitals Foundation Trust,Department of Biostatistics
[4] Member of Liverpool Health Partners,Division of Rehabilitation, Ageing and Wellbeing, School of Medicine
[5] University of Liverpool,Gloucestershire Retinal Research Group
[6] Member of Liverpool Health Partners,Department of Diabetes and Endocrinology
[7] Clinical Trials Research Centre,Department of Health Services Research
[8] University of Nottingham,undefined
[9] Cheltenham General Hospital,undefined
[10] Mersey Diabetes Support Group,undefined
[11] Royal Liverpool University Hospital,undefined
[12] University of Liverpool,undefined
[13] Member of Liverpool Health Partners,undefined
[14] Brownlow Health Centre,undefined
[15] Member of Liverpool Health Partners,undefined