Funding for this research was provided by:
Stockholm County Council Public Health Fund
Martin Rind Foundation
Sven Jerring Foundation
Karolinska Institute
Article History
Received: 2 September 2020
Accepted: 22 July 2021
First Online: 14 August 2021
Declarations
:
: The study was approved by the Regional Ethical Review Board in Stockholm, Sweden (2012/877–31/5) on the 14th of June, 2012. Informed consent was collected from all parents in writing.
: The written informed consents that were obtained from parents include consent for publication.
: The authors declare no competing interests.