[1] Rio de Janeiro State Fed Univ, Sch Med & Surg, Dept Gen Med, Rio De Janeiro, Brazil
[2] Fluminense Fed Univ, Fac Med, Internal Med Dept, Clin Immunol Serv, Rio De Janeiro, Brazil
[3] Univ Porto, Fac Med, Dept Pathol, Basic & Clin Immunol Unit, Porto, Portugal
[4] Univ Estado Rio De Janeiro, Fac Med, Dept Pediat, RIO DE JANEIRO, Brazil
[5] Brigham & Womens Hosp, Div Rheumatol Immunol & Allergy, Boston, MA USA