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Article History

Received: 20 February 2020

Accepted: 17 July 2020

First Online: 23 July 2020

Ethics approval and consent to participate

: This study was approved by the Ethics Committee of Jilin University First Hospital. All mentioned data were accessed with the approval of the hospital.

: Written informed consents were provided by the parents of patients for the publication of case history and clinical results. A copy of the written consent was available for the review by the editor of this journal.

: The authors declare that they have no competing interests.