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;

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;