Text and Data Mining valid from 2020-02-13
Received: 21 September 2019
Accepted: 4 February 2020
First Online: 13 February 2020
Ethics approval and consent to participate
: The study was reviewed and approved by the National Healthcare Groups’ Domain Specific Review Board. Written informed consent was obtained from all participants and parents or legally acceptable representatives of those aged below 21 years.
: Not applicable.
: The authors declare that they have no competing interests.