Received: 14 January 2019
Accepted: 23 April 2019
First Online: 7 May 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Peking University First Hospital. Written informed consent was obtained from the parents of the patient.
: Written informed consent was obtained from the parents for publication of this case report.
: The authors declare that they have no competing interests.
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