Botelho, S Y Tear sodium, potassium, chloride, and calcium at various flow rates: children with cystic fibrosis and unaffected siblings with and without corneal staining. [electronic resource] - The Journal of pediatrics Oct 1973 - 601-6 p. digital Publication Type: Journal Article ISSN: 0022-3476 Standard No.: 10.1016/s0022-3476(73)80221-5 doi Subjects--Topical Terms: Calcium--analysisChildChlorides--analysisCornea--pathologyCystic Fibrosis--metabolismEye--pathologyFluoresceinsHumansPotassium--analysisSodium--analysisStaining and LabelingTears--analysis