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Authors
Högberg, Ulf https://orcid.org/0000-0002-2121-7511
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Article History
Received: 13 September 2021
Accepted: 5 January 2022
First Online: 4 February 2022
Declarations
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: The National Board of Health and Welfare provided the aggregated data on the cases by diagnosis and year (1987–2019) (diary number 28147/2020). The Regional Ethical Review Board in Uppsala approved the study (2014-11-19 No 383) for the data on regional distribution from 1987 to 2014 and on neuroimaging from 2005 to 2014.
: The manuscript does not contain data from any individual person.
: The author declares no competing interests.
