Funding for this research was provided by:
Medical Research Council (MR/P008577/1)
Health Education England
The Farr Institute for Health Informatics Research (MR/M0501633/1)
Wellcome Trust (200335/Z/15/Z)
Received: 2 August 2018
Accepted: 16 April 2019
First Online: 15 May 2019
Ethics approval and consent to participate
: The Millennium Cohort Study was approved by the South West and London Multi Centre Research Ethics Committees. Referenced as MREC/01/6/19, MREC/03/2/022, 05/MRE02/46 for sweeps one, two and three respectively [CitationRef removed]. The present analyses did not require additional ethics approval.The Millennium Cohort Study obtained informed written consent from parent/ guardians of the cohort children in order to participate in the study and other participants as necessary [CitationRef removed]. The present analyses did not require additional consent approval.
: Not applicable.
: The authors have no financial relationships relevant to this article and no conflicts of interest to disclose.
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