Funding for this research was provided by:
National Natural Science Foundation of China (81870762, 81702674)
China Scholarship Council (201806230234)
Shanghai Municipal Population and Family Planning Commission (20184Y0025)
Shanghai Sailing Program (19YF1427500)
Shanghai Ninth People’s Hospital (JYZZ013)
Shanghai Ninth People's hospital (JYZZ043)
Received: 27 April 2020
Accepted: 21 July 2020
First Online: 31 July 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Shanghai Ninth People’s Hospital.
: Not applicable.
: The authors have declared that no competing interest exists.