CA Cancer J Clin.

The Journal of Clinical Oncology (CA:ACancerJournalforClinicians, CA Cancer J Clin) is a professional academic journal sponsored by the American Cancer Society, and is the medical journal with the highest impact factor in the world. In the 2013 ranking of the impact factor of magazines released by SCI magazine, CA Cancer J Clin ranked first in medical journals with an impact factor of 153.459, much higher than the New England Journal of Medicine (New Engl J Med, impact factor: 50.017), which ranked second.