Cal. Health & Safety Code § 103885
(d)
(3)
(g)
(4) The department and any regional cancer registry designated by the department may enter into agreements to furnish confidential information to other states’ cancer registries, federal cancer control agencies, local health officers, or health researchers for the purposes of determining the sources of cancer and evaluating measures designed to eliminate, alleviate, or ameliorate their effect. Before confidential information is disclosed to those agencies, officers, researchers, or out-of-state registries, the requesting entity shall agree in writing to maintain the confidentiality of the information, and in the case of researchers with a valid scientific interest as described in paragraph (3), shall also do both of the following:
(h) For the purpose of this section, “cancer” means either of the following: