المؤلفون: Kiefer, M. K., Finneran, M. M., Ware, C. A., Foy, P., Thung, S. F., Gabbe, S. G., Landon, M. B., Grobman, W. A., Venkatesh, K. K.

المصدر: Ultrasound in Obstetrics & Gynecology ; volume 60, issue 6, page 751-758 ; ISSN 0960-7692 1469-0705

الاتاحة: http://dx.doi.org/10.1002/uog.26071
https://onlinelibrary.wiley.com/doi/pdf/10.1002/uog.26071
https://onlinelibrary.wiley.com/doi/full-xml/10.1002/uog.26071
https://obgyn.onlinelibrary.wiley.com/doi/pdf/10.1002/uog.26071