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This is to certify that your paper entitled «Investigation of Programmed Cell Death-۱ (PD-۱) Gene Variations at Positions PD۱.۳ and PD۱.۵ in Iranian Patients with Non-small Cell Lung Cancer» was indexed with 5 pages, in the CIVILICA citation database, code COI:JR_MISJ-9-1_003, after evaluation and approval of the referees of the "Middle East Journal of Cancer Vol 9, Issue 1 , Year 2023.

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 journal 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.