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Distribution of select proteins in infants with clinically significant, low-grade, and no ROP. The box indicates the IQR (25th–75th percentile), and the median and mean are indicated by the lines and diamonds, respectively. The whiskers indicate data within 1.5 times the IQR, and points are data outside 1.5 times the IQR. IQR, interquartile range; RFU, relative fluorescence unit; Clin Sig, clinically significant ROP.
