Received: 8 April 2020
Accepted: 6 September 2020
First Online: 14 September 2020
Ethics approval and consent to participate
: All procedures performed in the study involving human participants were in accordance with the Declaration of Helsinki. Written informed consents were obtained from included patients for blood sampling and renal biopsy during their hospitalizations. The study was approved by the Ethics Committee of Peking Union Medical College Hospital (No. S-K1130).
: Not applicable.
: The authors declare that they have no competing interests.