[Retracted] Exposure to Ambient Air Pollutant PM<sub>10</sub> in the Second Trimester of Pregnancy Is Associated with Preterm Birth: A Birth-Based Health Information Cohort Study

<div>Flow diagram of the study population.</div>

BioMed Research International

fig1

Figure 1

Figure 1: [Retracted] Exposure to Ambient Air Pollutant PM<sub>10</sub> in the Second Trimester of Pregnancy Is Associated with Preterm Birth: A Birth-Based Health Information Cohort Study 

Figure 1 | [Retracted] Exposure to Ambient Air Pollutant PM10 in the Second Trimester of Pregnancy Is Associated with Preterm Birth: A Birth-Based Health Information Cohort Study 