This subchapter implements the Texas Cancer Incidence Reporting Act, Health and Safety Code, Chapter 82. This legislation concerns the reporting of cases of cancer for the recognition, prevention, cure or control of those diseases, and to facilitate participation in the national program of cancer registries established by 42 United States Code, §§280e - 280e-4. Nothing in this subchapter shall preempt the authority of facilities or individuals providing diagnostic or treatment services to patients with cancer to maintain their own cancer registries.