This article refers to:
Jarrick S, Lundberg S, Welander A, Fored CM, Ludvigsson JF. Clin Epidemiol. 2017;9:67–73.
The authors have advised that the Compliance with ethical standards section on page 69 is incorrect. The text “The current study was approved by the Stockholm Ethics Review Board (Jan 22, 2014; approval number: 2013/2095-31/2)” should read “The current study was approved by the Stockholm Ethics Review Board (March 31, 2010; approval number: 2010/407-31/1)”.
The authors apologize for this error.