Shi, Hui
He, Jingyan
Gao, Yunhe
Qin, Shuang
Fan, Jiaying
Xiao, Qing
Li, Kuanrong
Liang, Huiying
Funding for this research was provided by:
Guangzhou Medical Science Program (20141A011059)
Article History
Received: 9 September 2019
Accepted: 18 March 2020
First Online: 21 April 2020
Ethics approval and consent to participate
: Our study is retrospective. All study procedures were approved by the ethics committee of the Guangzhou Women and Children’s Medical Center (No. GO-2017-017). We conducted research using identifiable electronic medical record data. The research project did not involve personal privacy and commercial interests and was no longer accessible to participants. Therefore, the ethics committee approved the waiver of signed written informed consent and approved the procedure for verbal consent. At the same time, after obtaining ethical approval, we tried to contact the participants before using the data and notified them by phone. A patient who couldn’t be reached by phone, whose data could be used directly. For participants with missing follow-up data, oral informed consent was obtained before the start of each telephone interview. All processes have been recorded and saved. Administrative permissions were required to access and use the medical records described in our study.
: Not applicable.
: The authors declare that they have no competing interests.