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  1. American Cancer Society - Information and Resources about Cancer

  2. Cancer - Symptoms and causes - Mayo Clinic

  3. Cancer - World Health Organization (WHO)

  4. All About Cancer - American Cancer Society

  5. Cancer Statistics - NCI - National Cancer Institute

  6. What Is Cancer? | Cancer Basics | American Cancer Society

  7. Comprehensive Cancer Information - NCI

  8. Cancer - Our World in Data

  9. What Is Cancer? - NCI - National Cancer Institute

  10. Cancer: Types, Causes, Treatment, and Prevention - Healthline