Received: 1 June 2020
Accepted: 7 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: Informed consent for the use of data collected via questionnaires and clinics was obtained from all participants following the recommendations of the ALSPAC Ethics and Law Committee. Ethical approval for this study was obtained from the ALSPAC Ethics and Law Committee and Local Research Ethics Committees.
: The authors declare they have no actual or potential competing financial interests.