In the article “Sleep Duration and Cognitive Function: The Akershus Cardiac Examination 1950 Study” [Dement Geriatr Cogn Disord. 2024;53(6):338–44. https://doi.org/10.1159/000540273] by Ihle-Hansen et al., the affiliations of the 4th, 5th, 6th and 9th author were incorrect. The correct author affiliation list is:

Hege Ihle-Hansena, b, Gunnar Einvikc, d, Guri Hagberga, e, Bente Thommessenf, Ole Morten Rønningd, f, Thea Vigenf, Magnus Nakrem Lyngbakkenc, d, Trygve Bergea, Helge Røsjød, g, Arnljot Tveita, d, Håkon Ihle-Hansena