Funding for this research was provided by:
National Natural Science Foundation of China (81703534)
Beijing Municipal Natural Science Foundation (7182043)
Received: 25 February 2020
Accepted: 5 June 2020
First Online: 8 June 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of Beijing Friendship Hospital, Capital Medical University. A written informed consent was obtained from each patient.
: The authors have agreed to publish this research article in your journal.
: The authors declared no competing interests.