1. Centers for Disease Control and Prevention
2. Centers for Disease Control and Prevention
3. The ASCO Post
https://ascopost.com/news/september-2019/cancer-drugs-account-for-over-a-quarter-of-all-new-drug-approvals-in-the-us/
4. Nature Publishing Group
https://www.nature.com/articles/s41571-021-00477-1?amp%3Bamp
5. Surveillance, Epidemiology, and End Results Program