[1] Inst Nacl Enfermedades Resp, Crit Care, Mexico City, DF, Mexico
[2] Inst Nacl Enfermedades Resp, Interstitial Lung Dis & Rheumatol Unit, Mexico City, DF, Mexico
[3] Inst Nacl Enfermedades Resp, Resp Crit Care, Mexico City, DF, Mexico
[4] Inst Nacl Enfermedades Resp, Interstitial Lung Dis, Mexico City, DF, Mexico