Funding for this research was provided by:
National Natural Science Foundation of China (81671654, 81401385, and 81571636)
Natural Science Foundation of Shandong Province (ZR2014HQ011)
National Heart, Lung, and Blood Institute (K01HL121162)
China National Scholarship Fund (201709370009)
Received: 18 January 2018
Accepted: 26 April 2018
First Online: 2 May 2018
Ethics approval and consent to participate
: This study was approved by local ethical review committee of Yuhuangding Hospital. All participants signed inform consents before the study.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.