Funding for this research was provided by:
National Natural Science Foundation of China (81901823, 81771810, 61571343, 61671339, 61432014, 61772402)
National 630 High-Level Talents Special Support Program of China (CS31117200001)
National Key Research and Development Program of China (2016YFC0100300)
Project Funded by China Postdoctoral Science Foundation (2019M653659)
Natural Science Basic Research Plan in Shaanxi Province of China (2019JQ-198)
Received: 24 July 2019
Accepted: 7 January 2020
First Online: 15 January 2020
Ethics approval and consent to participate
: This study is approved by the local institutional review board. Informed written consents are obtained from parents of the neonates.
: Not applicable.
: The authors declare that they have no competing interests.