Gao, Xu
Yin, Hailei
Sun, Jixia
Article History
Received: 11 September 2019
Accepted: 15 October 2019
First Online: 20 November 2019
Ethics approval and consent to participate
: This study was conducted in accordance with the principles of the Declaration of Helsinki and approved by the medical ethics committee of No.971 Hospital of the People Liberation Army. All patients involved in this study gave informed written consent to participate.
: A written informed consent was obtained from all participants.
: The authors declare that they have no competing interests.