Funding for this research was provided by:
National Natural Science Foundation of China (81571598, 81871299)
National Health and Family Planning Commission of the People's Republic of China (201402001)
National Key Research and Development Program:"Precise Medical Research" (2016YFC0906201)
CAMS Initiative for Innovative Medicine (2016-I2M-1-013)
National Major Science and Technology Research Projects for the Control and Prevention of Major Infectious Diseases in China (2014ZX10003003)
Text and Data Mining valid from 2019-04-15
Received: 1 August 2018
Accepted: 4 April 2019
First Online: 15 April 2019
Ethics approval and consent to participate
: The study was approved by the institutional review board of Peking Union Medical College Hospital (approval number: S-443) and all methods were performed in accordance with the relevant guidelines and regulations. All patients provided written informed consent in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
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