Received: 28 September 2017
Accepted: 23 February 2018
First Online: 20 March 2018
Ethics approval and consent to participate
: No ethical committee opinion was requested because the use of this drug in adolescents is suggested by international guidelines. All procedures performed in this study were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. An informed consent for the sharing of anonymous patient data was obtained from families and/or caregivers.
: not applicable.
: The authors declare that they have no competing interests to declare.
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