Ali, S. A. “Correlation of HER-2 Status With Estrogen, Progesterone Receptors and Histological Grading in 122 Invasive Breast Carcinomas”. Zanco Journal of Medical Sciences (Zanco J Med Sci), vol. 13, no. 2, Aug. 2009, pp. 1-7, doi:10.15218/zjms.2009.012.