Hu, Yiran
Li, Hui
Gu, Min
Hua, Wei
Niu, Hongxia
Zhang, Nixiao
Liu, Xi
Chen, Xuhua
Hou, Cuihong
Zhou, Xiaohong
Zhang, Shu
Article History
Received: 22 April 2020
Accepted: 4 September 2020
First Online: 21 September 2020
Compliance with ethical standards
: The study was approved by the Institutional Ethics Committee of Fuwai Hospital and informed consent was obtained from all patients.
: Yiran Hu, Hui Li, Min Gu, Wei Hua, Hongxia Niu, Nixiao Zhang, Xi Liu, Xuhua Chen, Cuihong Hou, and Shu Zhang declare that they have no conflict of interest. Xiaohong Zhou is an employee of Medtronic, Inc.