Received: 1 March 2020
Accepted: 25 January 2021
First Online: 4 February 2021
Ethics approval and consent to participate
: The study was conducted in accordance with the Helsinki Declaration and was approved by the Ethics Committee of Beijing AnZhen Hospital and Beijing Tiantan Hospital, Capital Medical University. We also obtained written informed consent from all the patients included in the present research.
: Not applicable.
: The authors declare that they have no competing interests.