[1] Hosp Serv Publ Estadual Sao Paulo, Pneumol, Sao Paulo, Brazil
[2] Hosp Univ Oswaldo Cruz, Internal Med, Recife, PE, Brazil
[3] Hosp Univ Oswaldo Cruz, Recife, PE, Brazil
[4] Hosp Univ Oswaldo Cruz, Pneumol, Recife, PE, Brazil
[5] Hosp Univ Oswaldo Cruz, Pathol, Recife, PE, Brazil