title: Tumor markers in undiagnosed pleural effusions.
authors.forename: Richard W
authors.initials: RW
authors.lastname: Light
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis*; D003937:Diagnosis, Differential; D006801:Humans; D010996:Pleural Effusion / Q000737:chemistry / Q000175:diagnosis; D016066:Pleural Effusion, Malignant / Q000737:chemistry / Q000175:diagnosis*
chemical_list: D014408:Biomarkers, Tumor