Research Article
Letter: Aetiology of anencephaly and spina bifida.
Br Med J 1976; 1 doi: https://doi.org/10.1136/bmj.1.6007.455-b (Published 21 February 1976) Cite this as: Br Med J 1976;1:455This is a PDF-only article. The first page of the PDF of this article appears above.