Cite
Absent or shortened nasal bone length and the detection of Down Syndrome in second-trimester fetuses.
MLA
Gianferrari EA, et al. “Absent or Shortened Nasal Bone Length and the Detection of Down Syndrome in Second-Trimester Fetuses.” Obstetrics & Gynecology, vol. 109, no. 2 part 1, Feb. 2007, pp. 371–75. EBSCOhost, https://doi.org/10.1097/01.aog.0000250903.17964.87.
APA
Gianferrari EA, Benn PA, Dries L, Brault K, Egan JFX, Zelop CM, Gianferrari, E. A., Benn, P. A., Dries, L., Brault, K., Egan, J. F. X., & Zelop, C. M. (2007). Absent or shortened nasal bone length and the detection of Down Syndrome in second-trimester fetuses. Obstetrics & Gynecology, 109(2 part 1), 371–375. https://doi.org/10.1097/01.aog.0000250903.17964.87
Chicago
Gianferrari EA, Benn PA, Dries L, Brault K, Egan JFX, Zelop CM, Elisa A Gianferrari, et al. 2007. “Absent or Shortened Nasal Bone Length and the Detection of Down Syndrome in Second-Trimester Fetuses.” Obstetrics & Gynecology 109 (2 part 1): 371–75. doi:10.1097/01.aog.0000250903.17964.87.