[1] Univ Sao Paulo, Fac Med, Grp Doencas Pulm lntersticiais, Div Pneumol,Inst Coracao InCor,Hosp Clin, Sao Paulo, SP, Brazil
[2] Univ Sao Paulo, Fac Med, Hosp Clin, Inst Radiol InRad, Sao Paulo, SP, Brazil
[3] Univ Sao Paulo, Fac Med, Hosp Clin, Dept Reumatol, Sao Paulo, SP, Brazil
[4] Univ Sao Paulo, Fac Med, Div Pneumol, Sao Paulo, SP, Brazil