Authors’ contributions
JP
RECRUITMENT
TH, SJ, NK and TS contributed to the study design, coordination of the recruitment and data collection and prepared the first draft of the manuscript. BO, JP, KRT, EBF, PA, AM, RT, NK and TS contributed to the study design and involved in writing the original grant proposal. LT is managing the project and contributed to the preparation of the first draft of the manuscript. RT and SJ led the designing the retinal imaging sub-study and contributed to the writing of the manuscript. All authors reviewed and approved the final manuscript for submission.