Funding for this research was provided by:
Shanghai Minhang Health And Family Planning Commission (20184Y0189)
Received: 3 September 2019
Accepted: 2 July 2020
First Online: 17 July 2020
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of RenJi Hospital (2016075). Since all data were anonymously used and this study does not contain protected health information, the ethics committee approved a waiver of the requirement for informed consent. Individual patients consent was not obtained since all data used in this study were acquired retrospectively from the laboratory information system without any additional sampling or laboratory analysis. Patients could choose to opt out at any time and have their data removed from the registry.
: Not Applicable.
: The authors have declared no conflicts of interest.