Funding for this research was provided by:
Department of Health and Social Care Policy Research Programme through the Policy Research Unit in the Health of Children, Young People and Families (10090001)
National Institute for Health Research CLAHRC North Thames at Bart's Health NHS Trust
National Institute for Health Research Biomedical Research Centres Funding Scheme
Text and Data Mining valid from 2019-11-06
Received: 20 March 2019
Accepted: 16 October 2019
First Online: 6 November 2019
Ethics approval and consent to participate
: Ethical approval was granted by the Northern and Yorkshire multicentre research ethics committee in July 2011 (Ethics Committee reference: 11/YH/0203). Parents gave informed, written consent for their participation and the participation of their child. Where parents gave consent to the participation of their child in one or more elements of a survey, inclusion required the child’s own agreement and compliance.
: Not applicable.
: The authors declare that they have no competing interests.