title: Malignant tumors of the lung; their diagnosis by cytologic examination of sputum and bronchial secretions.
authors.forename: J R
authors.initials: JR
authors.lastname: McDONALD
authors.forename: L B
authors.initials: LB
authors.lastname: WOOLNER
mesh_terms: D006801:Humans; D008168:Lung; D008910:Minnesota; D009369:Neoplasms; D013183:Sputum