Li, Dongyue
Hai, Yong
Meng, Xianglong
Yang, Jincai
Yin, Peng
Article History
Received: 5 December 2018
Accepted: 19 June 2019
First Online: 28 June 2019
Ethics approval and consent to participate
: This research was approved by the ethics committee of the Chaoyang Hospital Affiliated to Capital Medical University. And agreement to participate was given by the participants. Because of the retrospective nature of the study, informed consent was waived.
: Written informed consent for publication of their clinical details and/or clinical images was obtained from the patient/parent/guardian/relative of the patient.
: The authors declare that they have no competing interests.