Funding for this research was provided by:
Health and Family Planning Commission of Sichuan Province (2016-SW (Sheng)-30, and 2017-SW(Yang)-02)
Received: 19 January 2020
Accepted: 15 October 2020
First Online: 23 November 2020
Ethics approval and consent to participate
: This study was approved by the ethics committee of Kunming Children’s Hospital, Kunming Medical University. Written informed consents were obtained from all participants in this study. Moreover, written informed consents were obtained from the parents of all participants under the age of 16. The ethics committee of Kunming Children’s Hospital, Kunming Medical University, were acquired by our team to access the data we used in our research.
: All participants have provided written informed consents to publish all identifying images, personal details and clinical details anonymously. Moreover, written informed consent for publication of identifying images or other personal or clinical details was obtained from the parents of any participant under the age of 18.
: The authors declare that they have no competing interests.