Article History
Received: 24 March 2020
Accepted: 9 July 2020
First Online: 29 July 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: Ethical oversight for the study was obtained from the ALSPAC Law and Ethics Committee and Local Research Ethics Committees.
: All individuals gave consent to be included in ALSPAC. Participation in the study was completely voluntary and could be ended at any point in time.