Funding for this research was provided by:
Biotechnology and Biological Sciences Research Council (/M011186/1)
Received: 22 April 2020
Accepted: 19 October 2020
First Online: 12 January 2021
Ethics approval and consent to participate
: Informed consent for the use of ALSPAC data collected via questionnaires and clinics was obtained from participants following the recommendations of the ALSPAC Ethics and Law Committee at the time. Follow-up of the children and sample collection/analysis was carried out under Institutional Review Board approval (Southampton and SW Hampshire Local Research Ethics Committee) with written informed consent obtained from parents or guardians.
: Manuscript was approved by the ALSPAC Executive prior to journal submission.
: The authors declare that they have no competing interests.