title: Design-based counting.
authors.forename: Heinz
authors.initials: H
authors.lastname: Fehrenbach
mesh_terms: D002452:Cell Count; D006652:Histological Techniques / Q000379:methods*; D006801:Humans; D010316:Particle Size; D012107:Research Design; D012140:Respiratory Tract Diseases / Q000175:diagnosis; D012680:Sensitivity and Specificity