Fig. 1From: Long-term study of urinary bisphenol A in elementary school childrenBox plot of bisphenol A concentrations in the urine samples collected in 1998, 2000, and 2003. For each box, the middle line represent the median, the box encompasses the 75th through 25th percentiles, and the arrows are at the 90th and 10th percentiles, respectivelyBack to article page