Mei, Mei
Xu, Hong
Wang, Libo
Huang, Guoying
Gui, Yonghao
Zhang, Xiaobo
Article History
Received: 29 January 2019
Accepted: 8 August 2019
First Online: 13 August 2019
Ethics approval and consent to participate
: The study was reviewed and approved by the local ethics committee of the Children’s Hospital of Fudan University (2017–263). A letter from Shanghai Pediatric Clinical Quality Control Center was sent to participants to inform them about the significance and use of the questionnaire, and informed consent was deemed to be given after completion of the questionnaire.
: Not applicable.
: The authors declare that they have no competing interests.