6　G McCord (2015) What you should know about 'anonymous' aggregate data about you.
7　J Spacey (10 November 2016) 4 types of data anonymization.
8　C Williamson (5 January 2017) Pseudonymization vs anonymization and how they help with GDPR.
9　RSA (2017) RSA privacy and security report.
10　M Nadeau (16 February 2018) General Data Protection Regulation (GDPR) requirements,deadlines and facts.
11　GDPR EU.org (no date). Fines and penalities.
12　California Department of Health Care Services (no date). Health Insurance Portability and Accountability Act.