Funding for this research was provided by:
Jin Lei Pediatric Endocrinology Growth Research Fund for Young Physicians (PEGRF-SD-20171006)
Article History
Received: 10 January 2018
Accepted: 25 March 2018
First Online: 3 April 2018
Ethics approval and consent to participate
: The study protocol was approved by the Ethic Committee of The Second Hospital of Shandong University and conducted in accordance with Helsinki’s Declaration. All the patients and their parents gave their written information consent.
: Not applicable.
: The authors declare that they have no competing interests.
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