Funding for this research was provided by:
Medical Research Council (MR/K501268/1)
Great Ormond Street Hospital for Children
Smiles with Grace
Text and Data Mining valid from 2018-03-29
Received: 2 February 2018
Accepted: 16 March 2018
First Online: 29 March 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: For this type of study, formal consent is not required. Local institution approval was obtained through the research and development department.