Funding for this research was provided by:
Key Technologies Research and Development Program (2017YFC0907600)
Key Technology Research and Development Program of Shandong (2008BAI59B02)
National High-tech Research and Development Program (2012AA02A513)
Received: 31 March 2020
Accepted: 3 November 2020
First Online: 10 December 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Peking Union Medical College Hospital, Beijing, China (S-478). Written informed consent was obtained from all participants, and the study was performed in accordance with the Declaration of Helsinki. Personal information was protected and kept anonymous in Chinese Registry of Systemic Vasculitis (CRSV) database.
: Consent for publication has been obtained from all patients.
: The authors declare that they have no competing interests.