BACKGROUND In trials designed to evaluate new therapies for hematologic malignancies, end points such as leukemia-free survival are often used as surrogates for overall survival in acute leukemia. We aimed to assess whether leukemia-free survival is an acceptable statistical surrogate for overall survival when applied to remission maintenance therapy for acute myeloid leukemia. DESIGN AND MET...

background: colorectal carcinoma is the third most common cause of death in iran. this study was performed in order to determine the appropriate distal clearance margin (dcm) for resection of rectal cancer in patients who undergo neoadjuvant chemoradiotherapy for sphincter preserving procedure. materials and methods: this was a cross-sectional study conducted in shahid faghihi hospital of shira...