Presented to

[نام نویسنده را انتخاب نمایید]

This is to certify that your paper entitled «Prognostic factors for survival in patients with colorectal cancer in iran between 2004-2015: competing risks regression analysis with generalized weibull model» was indexed with 1 pages, in the CIVILICA citation database, code COI:NASTARANCANSER03_089, after evaluation and approval of the referees of the "3rd INTERNATIONAL NASTARAN CANCER SYMPOSIUM held in Mashhad 2017.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above conference and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.