Are reported preterm birth rates reliable? An analysis of interhospital differences in the calculation of the weeks of gestation at delivery and preterm birth rate.

MLA

Balchin, Imelda, et al. “Are Reported Preterm Birth Rates Reliable? An Analysis of Interhospital Differences in the Calculation of the Weeks of Gestation at Delivery and Preterm Birth Rate.” BJOG: An International Journal of Obstetrics & Gynaecology, vol. 111, no. 2, Feb. 2004, pp. 160–63. EBSCOhost, https://doi.org/10.1046/j.1471-0528.2003.00026.x.

APA

Balchin, I., Whittaker, J. C., Steer, P. J., & Lamont, R. F. (2004). Are reported preterm birth rates reliable? An analysis of interhospital differences in the calculation of the weeks of gestation at delivery and preterm birth rate. BJOG: An International Journal of Obstetrics & Gynaecology, 111(2), 160–163. https://doi.org/10.1046/j.1471-0528.2003.00026.x

Chicago

Balchin, Imelda, John C. Whittaker, Philip J. Steer, and Ronald F. Lamont. 2004. “Are Reported Preterm Birth Rates Reliable? An Analysis of Interhospital Differences in the Calculation of the Weeks of Gestation at Delivery and Preterm Birth Rate.” BJOG: An International Journal of Obstetrics & Gynaecology 111 (2): 160–63. doi:10.1046/j.1471-0528.2003.00026.x.