Zhang, Xi-xi
Guo, Ling-yun
Liu, Lin-lin
Shen, Ao
Feng, Wen-ya
Huang, Wen-hua
Hu, Hui-li
Hu, Bing
Guo, Xin
Chen, Tian-ming
Chen, He-ying
Jiang, Yong-qiang
Liu, Gang
Funding for this research was provided by:
Pediatric Medical Coordinated Development Center of Beijing Municipal Administratio
Beijing Hospital Authority “Dengfeng” Talent Training Plan
National Science and Technology Major Project of China
Article History
Received: 27 February 2019
Accepted: 24 May 2019
First Online: 4 June 2019
Ethics approval and consent to participate
: This study was reviewed and approved by the Ethics Committee of Beijing Children’s Hospital Affiliated to Capital Medical University (2017-k-83). Informed consent was waived because this was a retrospectively study. We obtained patient data from the Medical Records and Statistics Room. We analysed the data anonymously. The raw data were permitted by the Ethics Committee of Beijing Children’s Hospital Affiliated to Capital Medical University.
: Not applicable.
: The authors declare that they have no competing interests.