title: Sputum viscoelasticity in chronic bronchitis.
mesh_terms: D001991:Bronchitis / Q000188:drug therapy / Q000503:physiopathology*; D002908:Chronic Disease; D003371:Cough; D004548:Elasticity; D006801:Humans; D008722:Methods; D013183:Sputum / Q000032:analysis / Q000503:physiopathology*; D014783:Viscosity