The history of treatment and advancement in this field heralds some praise . However , people battling cancer face a mortality rate demanding rapid progression of the research being done . Review of Literature Eleanor Harris , Vasthi Christiansen , Wei-Ting Hwang , Kevin Fos , and Lawrence Solin conducted a retrospective study at the University of Pennsylvania to determine whether concurrent or sequential radiation and tamoxifen treatments resulted in greater overall survival , relapse-free survival , and local recurrence in breast cancer patients . Patients included in the study...











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