Articles Heredity and Mental Deficiency Br Med J 1934; 1 doi: https://doi.org/10.1136/bmj.1.3827.870 (Published 12 May 1934) Cite this as: Br Med J 1934;1:870 Article Related content Metrics Responses Peer review Related articles Correction Correction Published: 04 April 1959; Br Med J 1 doi:10.1136/bmj.1.5126.932-b Correction Correction Published: 11 April 1959; Br Med J 1 doi:10.1136/bmj.1.5127.984-a See more Fertility authority must provide evidence for tests and treatments, say researchers BMJ November 28, 2016, 355 i6400; DOI: https://doi.org/10.1136/bmj.i6400 Lack of evidence for interventions offered in UK fertility centres BMJ November 28, 2016, 355 i6295; DOI: https://doi.org/10.1136/bmj.i6295 Screening children at immunisation visits can identify familial hypercholesterolaemia BMJ October 27, 2016, 355 i5794; DOI: https://doi.org/10.1136/bmj.i5794 Obesity treatment—are personalised approaches missing the point? BMJ September 20, 2016, 354 i4980; DOI: https://doi.org/10.1136/bmj.i4980 Hereditary haemochromatosis BMJ June 30, 2016, 353 i3128; DOI: https://doi.org/10.1136/bmj.i3128