Correspondence Night Blindness and Vitamin A Br Med J 1940; 1 doi: https://doi.org/10.1136/bmj.1.4125.151 (Published 27 January 1940) Cite this as: Br Med J 1940;1:151 Article Related content Metrics Responses Peer review Related articles No related articles found. See more Karl Ernst Schmidt BMJ February 22, 2019, 364 l863; DOI: https://doi.org/10.1136/bmj.l863 Avoidable deaths: falling in England; stalled in Scotland and Wales; and up in Northern Ireland BMJ February 22, 2019, 364 l860; DOI: https://doi.org/10.1136/bmj.l860 Sarah Wollaston: I’ll keep providing scrutiny, says newly independent MP BMJ February 22, 2019, 364 l861; DOI: https://doi.org/10.1136/bmj.l861 Improving services requires resources not targets BMJ February 22, 2019, 364 l830; DOI: https://doi.org/10.1136/bmj.l830 Ketamine should be available for treatment resistant depression, says FDA panel BMJ February 22, 2019, 364 l858; DOI: https://doi.org/10.1136/bmj.l858