Liang, Tingyu
Wang, Xiaoxuan
Li, Peiliang
Cao, Yang
Feng, Enshan
You, Gan
Article History
Received: 6 March 2018
Accepted: 7 August 2018
First Online: 28 August 2018
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Beijing Tiantan Hospital, and written informed consent was obtained from all the patients.
: Not applicable
: The authors declare that they have no competing interest.