Wang, Shujie
Ren, Zhifu
Liu, Jia
Zhang, Jianguo
Tian, Ye
Article History
Received: 5 December 2019
Accepted: 19 May 2020
First Online: 30 May 2020
Ethics approval and consent to participate
: All the patients included in this study provided written informed consent in accordance with the principles of the Declaration of Helsinki and the study was approved by Peking Union Medical College Hospital Ethics Committee. And all methods were carried out in accordance with relevant guidelines and regulations.
: All the patients included in this study provided written informed consent for publication of this article and any accompanying images. A copy of the written consent is available for review by the Editor of this journal.
: The work reported in the present manuscript was not supported financially and no conflicts of interest for any of the authors needs to be mentioned.