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APA Citation
Baer, R. J., McLemore, M. R., Adler, N., Oltman, S. P., Chambers, B. D., Kuppermann, M., Pantell, M. S., Rogers, E. E., Ryckman, K. K., Sirota, M., Rand, L., & Jelliffe-Pawlowski, L. L. (2018). pre-pregnancy or first-trimester risk scoring to identify women at high risk of preterm birth. European journal of obstetrics, gynecology, and reproductive biology, 231, 235–240. http://access.bl.uk/ark:/81055/vdc_100073673513.0x00003d