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Concentrations of β2-glycoprotein antibodies of patients with normal tension or primary open-angle glaucoma, and controls. β2AGP: anti β2-glycoprotein antibodies; NTG, normal tension glaucoma; POAG, primary open-angle glaucoma. The bars extend from the 25th percentile to the 75th percentile with a horizontal line at the median. Whiskers extend to the smallest value and up to the largest.
