[1] Hosp St Ana, SCML, Rheumatol & Osteoporosis Unit, Cascais, Portugal
[2] Univ Lisbon, Fac Med, Inst Microbiol, Lisbon, Portugal
[3] Univ Lisbon, Fac Med, Inst Med Mol, Rheumatol Res Unit, Lisbon, Portugal
[4] Hosp Santa Maria, Lisbon Acad Med Ctr, Rheumatol Dept, Lisbon, Portugal