Funding for this research was provided by:
National Major Project for Control and Prevention of Infectious Disease in China (2014ZX10004001-002)
National Major Project for Control and Prevention of Infectious Disease in China (2017ZX10104001-002-003, 2014ZX10004001-002)
National Key Research and Development Program of China ((2016YFD0500301)
Received: 16 August 2018
Accepted: 15 August 2019
First Online: 20 August 2019
Ethics approval and consent to participate
: The study protocol was approved by the hospitals’ Ethics Committees and the Chinese Center for Disease Control and Prevention. Participants or their guardians received a document entitled “Written Informed Consent” describing the study’s purpose and their right to keep information confidential prior to clinical data form principal investigator. And the written informed consents were delivered to the study coordinators from patients’ guardians. The Institutional Review Board of the Hospital provided ethical clearance for conducting this study and waivered the requirement to obtain informed consent from the patients whose medical records were analyzed in this study, as it involved an internal, retrospective review of patient charts without any acquisition of identifying patient information. Permission was obtained from the Institutional Review Board of the Hospital to review patient charts. Data were accessible only to authorized members of the core study team.
: Written informed consent for the publication was obtained from the participating patients’ guardians.
: The authors declare that they have no competing interests.