- American Cancer Society
- American Cancer Society Breast Cancer Network
- American Institute for Cancer Research
- CancerNet of the National Cancer Institute
- Healthfinder
- National Alliance of Breast Cancer Organizations (NABCO)
- National Institutes of Health
- National Cancer Institute
- National Marrow Donor Program
- Oncolink
- Oncolink's Breast Cancer Page (University of Pennsylvania's Cancer Center)
- Pancreatica.org
- US National Library of Medicine



