Cite
MLA Citation
Tongjun Guo et al.. “Association between PM2·5 exposure and the risk of preterm birth in Henan, China: a retrospective cohort study.” Lancet, vol. 390, n.d., pp. S24–. http://access.bl.uk/ark:/81055/vdc_100054502776.0x00004e
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Tongjun Guo et al.. “Association between PM2·5 exposure and the risk of preterm birth in Henan, China: a retrospective cohort study.” Lancet, vol. 390, n.d., pp. S24–. http://access.bl.uk/ark:/81055/vdc_100054502776.0x00004e