Cui, Yu
Cao, Rong
Li, Jia
Deng, Ling-mei
Article History
Received: 26 November 2020
Accepted: 13 April 2021
First Online: 23 April 2021
Declarations
:
: After obtaining Institutional Review Board (IRB) approval [No. 2020 (14)], we retrieved patient data from the electrical record system at Chengdu Women’s and Children’s Central Hospital.
: Not applicable.
: The authors declare no competing interests.