Migration from HL7 Clinical Document Architecture (CDA) to Fast Health Interoperability Resources (FHIR) in infectious disease information system of EstoniaBossenko, Igor; Linna, Kerli; Piho, Gunnar; Ross, PeeterSAC '23: Proceedings of the 38th ACM/SIGAPP Symposium on Applied Computing2023 / p. 882-885 https://doi.org/10.1145/3555776.3577836 Modelling a patient identifier system in the Estonian National Health Information SystemBossenko, Igor; Piho, Gunnar; Ross, PeeterDigital Economy. Emerging Technologies and Business Innovation 9th International Conference on Digital Economy, ICDEc 2024, Rabat, Morocco, May 9–11, 2024, Proceedings, Part II2023 / p. 132 - 145 https://doi.org/10.1007/978-3-031-76368-7_10