1. Benantar, M.: Access Control Systems: Security. Identity Management and Trust Models. Springer Science & Business Media, Berlin (2005)
2. Brixey, J., Johnson, T.R., Zhang, J.: Evaluating a medical error taxonomy. In: Proceedings of the AMIA Symposium, p. 71. American Medical Informatics Association (2002)
3. Buterin, V., et al.: Ethereum white paper: a next generation smart contract & decentralized application platform. First version 53 (2014)
4. Cameron, K., Posch, R., Rannenberg, K.: Proposal for a common identity framework: A user-centric identity metasystem http://www.identityblog.com/wp-content/images/2009/06. UserCentricIdentityMetasystem. html (2009)
5. Carlisle, B., Kimmelman, J., Ramsay, T., MacKinnon, N.: Unsuccessful trial accrual and human subjects protections: an empirical analysis of recently closed trials. Clinical Trials 12(1), 77–83 (2015)