Text and Data Mining valid from 2020-05-04
Received: 23 June 2019
Accepted: 17 February 2020
First Online: 4 May 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments.
: We have obtained consent to publish from the participant (or legal parent or guardian for children) to report individual patient data. The parents were reassured that non-participation would not affect the services they received and that their child’s information would be kept strictly confidential.
: The authors declared that they have no competing interests.