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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Papp Z., Váradi E., Szabó Z. Grandmaternal age at birth of parents of children with trisomy 21. Hum Genet. 1977 Nov 10;39(2):221–224. doi: 10.1007/BF00287015. [DOI] [PubMed] [Google Scholar]