An Interactive Annotated World Bibliography of Printed and Digital Works in the History of Medicine and the Life Sciences from Circa 2000 BCE to 2024 by Fielding H. Garrison (1870-1935), Leslie T. Morton (1907-2004), and Jeremy M. Norman (1945- ) Traditionally Known as “Garrison-Morton”

16085 entries, 14171 authors and 1949 subjects. Updated: May 11, 2026

PENROSE, Lionel Sharples

2 entries
  • 4962.1

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.



Subjects: GENETICS / HEREDITY › HEREDITARY / CONGENITAL DISEASES OR DISORDERS › Down Syndrome, OBSTETRICS & GYNECOLOGY › OBSTETRICS
  • 4962.2

The biology of mental defect.

London: Sidgwick & Jackson, 1949.


Subjects: GENETICS / HEREDITY › GENETIC DISORDERS, PSYCHIATRY