Historical Bibliography Updated: July 14, 2026
A clinical and genetic study of 1,280 cases of mental defect.
Spec. Rep. Ser. Med. Res. Coun. (Lond), No. 229. 1938.
In this exhaustive study Penrose showed (p. 36) the significance of maternal age in the etiology of Down syndrome.
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| Catalog Metadata | Reference Information |
|---|---|
| Entry Number | #4962.1 |
| Permanent Link | https://beta.historyofmedicine.com/id/6325 |
| Author Bio Link | Wikipedia ↗ |
| External URL | a-clinical-and-genetic-study-of-1280-cases-of-mental-defect |