Clinical Respiratory Medicine : Expert Consult - Online and Print (4th Edition) - Spiro, Stephen G.; Silvestri, Gerard A; Agustí, Alvar; Agusti, Alvar; Agustí, Alvar; Silvestri, Gerard A.; Spiro, Stephen G.; Agustí Alvar Agustí, PhD, FRCPE, Alvar; Silvestri Gerard A. Silvestri, M. S.; Spiro, Stephen (W.B. Saunders, 2012)