Funding for this research was provided by:
National Natural Science Foundation of China (81371872, 81772247)
Text and Data Mining valid from 2018-08-13
Received: 22 February 2018
Accepted: 1 August 2018
First Online: 13 August 2018
Ethics approval and consent to participate
: This is a retrospective study. The strains used here were all preserved strains taken as part of routine care from clinical laboratories. Since no animal or human data were used in this study, the ethics committee of the Shanghai General Hospital ruled that no formal ethics approval was required in this particular case.
: Not applicable.
: The authors declare that they have no competing interests.
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