Cite
Serum markers for Down's syndrome in women who have had in vitro fertilisation: implications for antenatal screening.
MLA
Wald, N. J., et al. “Serum Markers for Down’s Syndrome in Women Who Have Had in Vitro Fertilisation: Implications for Antenatal Screening.” British Journal of Obstetrics and Gynaecology, vol. 106, no. 12, Dec. 1999, pp. 1304–06. EBSCOhost, https://doi.org/10.1111/j.1471-0528.1999.tb08186.x.
APA
Wald, N. J., White, N., Morris, J. K., Huttly, W. J., & Canick, J. A. (1999). Serum markers for Down’s syndrome in women who have had in vitro fertilisation: implications for antenatal screening. British Journal of Obstetrics and Gynaecology, 106(12), 1304–1306. https://doi.org/10.1111/j.1471-0528.1999.tb08186.x
Chicago
Wald, N J, N White, J K Morris, W J Huttly, and J A Canick. 1999. “Serum Markers for Down’s Syndrome in Women Who Have Had in Vitro Fertilisation: Implications for Antenatal Screening.” British Journal of Obstetrics and Gynaecology 106 (12): 1304–6. doi:10.1111/j.1471-0528.1999.tb08186.x.