%0 Journal Article
%K General Medicine
%K Vision impairment
%B BMJ Open
%D 2020
%G eng
%I BMJ
%N 9
%P e036689
%R 10.1136/bmjopen-2019-036689
%T Estimating the global cost of vision impairment and its major causes: protocol for a systematic review
%U https://bmjopen.bmj.com/content/bmjopen/10/9/e036689.full.pdf
%V 10