title: Once more: Light's criteria revisited.
authors.forename: R R
authors.initials: RR
authors.lastname: Keller
mesh_terms: D002784:Cholesterol / Q000032:analysis; D005122:Exudates and Transudates / Q000737:chemistry*; D006801:Humans; D010996:Pleural Effusion / Q000737:chemistry*; D012680:Sensitivity and Specificity
chemical_list: D002784:Cholesterol