title: Asthma classification.
authors.affiliation: Northwestern University, Department of Medicine, USA.
authors.forename: Keith I
authors.initials: KI
authors.lastname: Lenchner
authors.forename: Carol
authors.initials: C
authors.lastname: Saltoun
mesh_terms: D001249:Asthma / Q000145:classification* / Q000209:etiology / Q000276:immunology; D006801:Humans