title: About the importance of latent foci of infection in the area of the upper airways.
authors.forename: F
authors.initials: F
authors.lastname: LANGRAF
mesh_terms: D012137:Respiratory System; D012140:Respiratory Tract Diseases
keywords: RESPIRATORY TRACT/diseases
vernacular_title: Ueber die Bedeutung latenter Infektionsherde im Gebiete der oberen Luftwege.