APA (7th ed.) Citation

Ashoor, G., Syngelaki, A., Wang, E., Struble, C., Oliphant, A., Song, K., & Nicolaides, K. H. (2013). Trisomy 13 detection in the first trimester of pregnancy using a chromosome-selective cell-free DNA analysis method. Ultrasound in Obstetrics & Gynecology, 41(1), 21. https://doi.org/10.1002/uog.12299

Chicago Style (17th ed.) Citation

Ashoor, G., A. Syngelaki, E. Wang, C. Struble, A. Oliphant, K. Song, and K. H. Nicolaides. "Trisomy 13 Detection in the First Trimester of Pregnancy Using a Chromosome-selective Cell-free DNA Analysis Method." Ultrasound in Obstetrics & Gynecology 41, no. 1 (2013): 21. https://doi.org/10.1002/uog.12299.

MLA (9th ed.) Citation

Ashoor, G., et al. "Trisomy 13 Detection in the First Trimester of Pregnancy Using a Chromosome-selective Cell-free DNA Analysis Method." Ultrasound in Obstetrics & Gynecology, vol. 41, no. 1, 2013, p. 21, https://doi.org/10.1002/uog.12299.