Li, Wei
Xiong, Li
Zhu, Qiaoling
Lu, Hong
Zhong, Meiling
Liang, Meirong
Jiang, Wei
Wang, Yanan
Cheng, Wei
Article History
Received: 9 March 2020
Accepted: 18 April 2021
First Online: 1 May 2021
Declarations
:
: The study was approved by the Ethics Committee of the Hunan Maternal and Child Health Hospital. The written informed consent to participate was provided by all patients.
: Not Applicable.
: The authors declare that they had no competing interests.