المؤلفون: Savitsky, Aleksey G., Savitsky, Gennady A., Ivanov, Dmitry O., Mikhailov, Anton V., Kurganskiy, Alexander V., Mill, Ksenia V.

المصدر: The Journal of Maternal-Fetal & Neonatal Medicine ; volume 26, issue 6, page 566-570 ; ISSN 1476-7058 1476-4954

الاتاحة: http://dx.doi.org/10.3109/14767058.2012.738261
http://www.tandfonline.com/doi/pdf/10.3109/14767058.2012.738261