1 Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.
2 Departamento de Dermatologia, Universidade Santo Amaro, UNISA, São Paulo, Brazil; dimitriluzfs@gmail.com.
3 Rheumatology Section, Internal Medicine Service, Hospital Italiano de Buenos Aires, and Instituto Universitario Hospital Italiano de Buenos Aires, Buenos Aires, Argentina.
4 Leeds Teaching Hospitals NHS Trust, and Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK.
5 Rheumatology Research, Providence Swedish Medical Center, and University of Washington School of Medicine, Washington, Seattle, USA.