Zheng, Yucan
Zhang, Zhihua
Yan, Kunlong
Guo, Hongmei
Li, Mei
Lian, Min
Liu, Zhifeng
Article History
Received: 15 June 2020
Accepted: 2 April 2021
First Online: 17 April 2021
Declarations
:
: The study protocol was approved by the Research Ethics Committee of Children’s Hospital of Nanjing Medical University (NO. 202004035–1). Due to its retrospective nature, informed consent was waived. The administrative permission was acquired by our team to access the data used in our research.
: Not applicable.
: All authors report no conflicts of interests.