Inconsistency in Schirmer tear test strips.
D006801:Humans; D007202:Indicators and Reagents / Q000592:standards*; D007766:Lacrimal Apparatus Diseases / Q000175:diagnosis; D011934:Reagent Strips / Q000592:standards*; D013666:Tears / Q000276:immunology*
D007202:Indicators and Reagents; D011934:Reagent Strips