Funding for this research was provided by:
Fundação de Amparo à Pesquisa do Estado de São Paulo (#2008/57316-1 and #2009/53449-0)
Received: 25 March 2019
Accepted: 12 July 2019
First Online: 6 August 2019
Ethics approval and consent to participate
: This study was approved by the hospital ethics committee (protocol CEP#0330/09). All participating subjects signed the informed consent form.
: All authors are aware of the full content of the manuscript and provided consent for the submission to Advances in Rheumatology.
: The authors declare that they have no competing interests.