Figure 4.

Distribution of urinary N-acetyl glycoprotein resonance intensity in induced preterm birth (IPB) cases and controls stratified by maternal body mass index (BMI). Box plots represent median and range of metabolite concentration with numbers in white corresponding to individual counts per categories.

Maitre et al. BMC Medicine 2014 12:110   doi:10.1186/1741-7015-12-110
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