Articles
Sight-saving Classes
Br Med J 1945; 1 doi: https://doi.org/10.1136/bmj.1.4384.53 (Published 13 January 1945) Cite this as: Br Med J 1945;1:53
Article usage
Article metrics provide readers and authors with an indication of how often a specific article has been accessed month by month. It counts three formats - abstract/extract, full text and pdf. The page is updated each day.