Funding for this research was provided by:
National Health Commission of the People's Republic of China (2015-42)
Article History
Received: 17 May 2022
Accepted: 5 October 2022
First Online: 28 October 2022
Declarations
:
: This study was approved by the Ethics Committee of the Capital Institute of Pediatrics (SHERLL-2015009). Parents of the newborns understood the purpose of the survey and provided informed consent. All the methods were performed in accordance with relevant guidelines and regulations, including the Declaration of Helsinki for human studies by the World Medical Association.
: No financial or non-financial benefits have been received or will be received from any party related directly or indirectly to the subject of this article. The authors have no conflict of interest to declare.