Prevalence of pulmonary hypertension in COPD patients living at high altitude C. Aguirre-Franco; CA. Torres-Duque; G. Salazar; A. Casas; C. Jaramillo; M. Gonzalez-Garcia;

Impact of treating obesity hypoventilation syndrome on body mass index R.G.S. Andrade; J.F. Masa; J-C. Borel; L.F. Drager; P.R. Genta; B. Mokhlesi; G. Lorenzi-Filho;

Development and validation of a prognostic index (BODEXS90) for mortality in stable chronic obstructive pulmonary disease R. Golpe; C. Esteban; J.M. Figueira-Gon..alves; C.A. Amado-Diago; N. Blanco-Cid; A. Aramburu; I. Garc.ía-Talavera; M. Cristeto; M. Acosta-Sorensen;