Funding for this research was provided by:
Public Health England
Text and Data Mining valid from 2018-03-27
Received: 21 June 2017
Accepted: 19 March 2018
First Online: 27 March 2018
Ethics approval and consent to participate
: NHS Research Ethics Committees ethical approval was sought and granted for BCS70 follow-ups from 2000 on. Available records suggest that only internal university-based ethical review was sought for previous surveys [CitationRef removed]. The datasets analyzed during the current study are available to registered researchers through the UK Data Service repository who gave permission for us to use these data.
: Not applicable
: The authors declare that they have no competing interests.
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