Settin, A., Abu-Saif, I. S., El-Baz, R., Dowaidar, M., Abu-Al Kasim, R., & Shabana, S. (2007). Diagnosis of Sex Chromosome Disorders and Prenatal Diagnosis of Down Syndrome using. International Journal of Health Sciences, 1(2). Retrieved from https://pub.qu.edu.sa/index.php/journal/article/view/84