Funding for this research was provided by:
Outstanding Leaders Training Program of Pudong Health Bureau of Shanghai (PWRI2016-04)
Gaofeng Clinical Medicine Grant Support (2017269)
Received: 18 April 2019
Accepted: 18 June 2019
First Online: 15 July 2019
Ethics approval and consent to participate
: This study was approved by the ethics committee of Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China and the Review Board exempted the requirement for written informed consent because this is a retrospective study that only focused on bacteria and did not affect the patients.
: Not applicable.
: The authors declare that they have no competing interests.