Funding for this research was provided by:
Natural Science Foundation of Inner Mongolia (No. 2018MS08004)
Archives and Special Collections on Women in Medicine (Nos. 2017YFC1200303, 2016YFC1200701)
National Infectious Importance Special Fund (No. 2017ZX10303401)
Received: 10 January 2019
Accepted: 28 November 2019
First Online: 16 December 2019
Consent for publication
: Not applicable.
: The authors declare that they have no competing interests.