Boge, Gudrun Seeberg http://orcid.org/0000-0001-6889-4002
Moldal, Elena Regine
Dimopoulou, Maria
Skjerve, Eystein
Bergström, Annika
Article History
Received: 6 December 2018
Accepted: 15 April 2019
First Online: 25 April 2019
Change Date: 19 February 2020
Change Type: Correction
Change Details: After publication of our article [1] we were notified that due to an error in the excel formula used to summarise the control population, the ID-registry data from the Swedish county Gävleborg was not included in the calculations. When including Gävleborg, as intended, the numbers in the adjusted Swedish control population change slightly. It does not influence the Norwegian control population.