Fig. 4From: Associations between exposure to cadmium, lead, mercury and mixtures and women’s infertility and long-term amenorrheaThe blood heavy metal distributions among the sub-group (pregnant and ever-infertile) samples. These results are un-weighted. The original and log-transformed blood heavy metal concentrations and heavy metal mixture scores in women for the sub-group (pregnant and fertile) comparison. Each box plot includes the lower (25%) and upper (75%) quartile, median (string), and mean (diamond dot). These results are un-weighted. ***p < 0.001Back to article page