Funding for this research was provided by:
National Natural Science Foundation of China (81571152, 81670380)
Luhe Hospital Research Foundation (No. lhq201502)
Text and Data Mining valid from 2018-05-28
Received: 1 November 2017
Accepted: 6 May 2018
First Online: 28 May 2018
: All animal experiments were approved by the Capital Medical University Institutional Animal Care and Use Committee and were performed in accordance with guidelines approved by the Capital Medical University for the Care and Use of Laboratory Animals.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.