Funding for this research was provided by:
Ministry of Science and Technology of the People's Republic of China (2011ZX09307-001-07)
Received: 9 December 2018
Accepted: 3 February 2019
First Online: 14 February 2019
Ethics approval and consent to participate
: This study and all protocols were approved by the Ethics Committee at Peking University First Hospital and performed in accordance with the tenets of the Declaration of Helsinki. Written informed consent was obtained from all the study participants and/or their parents.
: The adult patients and the parents of the children described in this article provided consent for participation in the study and for publishing the obtained results.
: The authors declare that they have no competing interests.
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