Document is current
Any future updates will be listed below
-
Authors
Kang, Liangyu
Jing, Wenzhan
Liu, Jue
Ma, Qiuyue
Zhang, Shikun
- License Information
-
More Information
Article History
Received: 9 September 2021
Accepted: 28 February 2022
First Online: 12 March 2022
Declarations
:
: This study was approved by the Institutional Review Board of the Chinese Association of Maternal and Child Health Studies with the approval number CAMCHS16001. This cross-sectional survey was performed in accordance with the Declaration of Helsinki. Informed consent was obtained from all survey participants.
: Not applicable.
: The authors declare that they have no competing interests.
