Full text
PDFPage 34

Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Seller M. J., Singer J. D., Coltart T. M., Campbell S. Maternal serum-alpha-fetoprotein levels and prenatal diagnosis of neural-tube defects. Lancet. 1974 Mar 16;1(7855):429–433. [PubMed] [Google Scholar]
