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[Translated article] Biological Biomarkers in Respiratory Diseases Francisco García-Río; Bernardino Alcázar-Navarrete; Diego Castillo-Villegas; Catia Cilloniz; Alberto García-Ortega; Virginia Leiro-Fernández; Irene Lojo-Rodriguez; Alicia Padilla-Galo; Carlos A. Quezada-Loaiza; Jose Antonio Rodriguez-Portal; Manuel Sánchez-de-la-Torre; Oriol Sibila; Miguel A. Martínez-García;