Reda Hemida, Mohammad Arafa, Hosam AbdElfattah, and Doaa Sharaf-Eldin. “Human Chorionic Gonadotropin (hCG) Testing in Specimens of Tumor and Myometrial Tissues During Surgical Treatment of Gestational Trophoblastic Tumors”. Journal of Cancer Research Updates, vol. 4, no. 3, July 2015, pp.  122-126, doi:10.6000/1929-2279.2015.04.03.3.