Health & Safety Code 103865(f)
All information collected for the Parkinson's disease incidence program is confidential, unless otherwise provided in this section. Before disclosing information, the person or entity requesting confidential information must agree in writing to maintain the confidentiality of the information. Disclosure of information should be limited to the stated purpose of the request and only used for such purpose. The Department of Health Services must maintain a record of persons given access to confidential information. Confidential information cannot be subpoenaed or used or admitted into evidence in judicial or administrative proceedings. Individuals shall have access to their own information.