Funding for this research was provided by:
National Natural Science Foundation of China (81870834)
Intergovernmental cooperation on international scientific and technological innovation (2017YFE0121200)
Special project of pediatrics of collaborative development center of Beijing hospital administration (XTYB201817)
Article History
Received: 15 March 2021
Accepted: 7 April 2021
First Online: 28 June 2021
Declarations
:
: The authors declare that they have no conflict of interest. All authors consent for publication.
: This research with approved by the research ethics committee of the Beijing Tiantan Hospital, Capital Medical University, Beijing and had been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. All persons gave their informed consent prior to their inclusion in the study. Details that might disclose the identity of the subjects under study should be omitted.