1. Division of Nursing, Midwifery and Social Work, School of Health Sciences, Faculty of Biology, Medicine and Health; University of Manchester, Manchester Academic Health Science Centre; Manchester UK
2. Division of Population Health, Health Services Research & Primary Care, Faculty of Biology, Medicine and Health; University of Manchester; Manchester UK
3. Sydney Eye Hospital; Sydney Australia
4. Faculty of Medicine; University of New South Wales; Kensington, Sydney Australia
5. School of Medicine; University of Sydney; Camperdown, Sydney Australia
6. Nursing Research Institute; St Vincent’s Health Australia Sydney, St Vincent’s Hospital Melbourne & Australian Catholic University; Fitzroy, Melbourne Australia