Funding for this research was provided by:
Associação Fundo de Incentivo à Pesquisa (62491416.5.0000.5327)
Sociedade Brasileira de Reumatologia
Sociedade de Reumatologia do Rio Grande do Sul
Received: 28 June 2020
Accepted: 24 August 2020
First Online: 1 December 2020
Ethics approval and consent to participate
: The study was approved by the institutional research ethics committee of the Hospital de Clínicas de Porto Alegre/Brazil (number 16–0616, CAAE: 62491416.5.0000.5327). All study subjects had diagnosis of SLE with age greater than 18 years old and provided written consent form for study participation.
: Not applicable.
: The authors declare that they have no competing interests.