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APA Citation
Matei, A., Saccone, G., Vogel, J. P., & Armson, A. B. (2019). primary and secondary prevention of preterm birth: a review of systematic reviews and ongoing randomized controlled trials. European journal of obstetrics, gynecology, and reproductive biology, 236, 224–239. http://access.bl.uk/ark:/81055/vdc_100081479055.0x000039