Funding for this research was provided by:
National Key R&D Program of China (2017YFC1310902)
Young Elite Scientists Sponsorship Program by CAST (2018QNRC001)
Beijing Municipal Administration of Hospitals Incubating Program (PX2020021)
Beijing Excellent Talents Training Program (2018000021469G234)
Received: 21 October 2020
Accepted: 30 December 2020
First Online: 12 January 2021
Ethics approval and consent to participate
: The study was performed according to the guidelines of the Helsinki Declaration and was approved by the Ethics Committee of Kailuan General Hospital (Approval Number: 2006-05) and Beijing Tiantan Hospital (Approval Number: 2010-014-01). All participants were agreed to take part in the study and provided informed written consent.
: Not applicable.
: These authors declare that they have no conflicts of interests.