Text and Data Mining valid from 2019-08-14
Received: 12 April 2019
Accepted: 4 August 2019
First Online: 14 August 2019
Compliance with ethical standards
: All the authors declare that they have no conflict of interest.
: All procedures performed in this study were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from the child’s parents.