title: CODEX: A Prognostic Index for chronic obstructive pulmonary disease in Internal Medicine.
authors.affiliation: Servicio de Medicina Interna, Hospital Vall d'Hebron, Barcelona, España.
authors.forename: C
authors.initials: C
authors.lastname: Marcos-Fosch
authors.affiliation: Servicio de Medicina Interna, Hospital Vall d'Hebron, Barcelona, España. Electronic address: jrecio@hebron.net.
authors.forename: J
authors.initials: J
authors.lastname: Recio-Iglesias