المؤلفون: Pugash, D., Schrader, K. A., Dunham, C. P., Popescu, O.-E., Sargent, M. A., Lehman, A. M., Yong, S. L., Clarke, L. A.

المصدر: Journal of Ultrasound in Medicine ; volume 32, issue 5, page 881-883 ; ISSN 0278-4297 1550-9613

الاتاحة: http://dx.doi.org/10.7863/ultra.32.5.881
https://onlinelibrary.wiley.com/doi/full/10.7863/ultra.32.5.881