1. “openEHR website.” https://www.openehr.org/ (accessed Jul. 01, 2021).
2. “ISO - ISO 13606-1:2019 - Health informatics — Electronic health record communication — Part 1: Reference model.” https://www.iso.org/standard/67868.html (accessed Dec. 08, 2021).
3. “ISO 13606 Standard - EHR Interoperability.” http://www.en13606.org/information.html# (accessed Dec. 08, 2021).
4. “HL7 Standards Product Brief - CDA® (HL7 Clinical Document Architecture) | HL7 International.” https://www.hl7.org/implement/standards/product_brief.cfm?product_id=496 (accessed Dec. 08, 2021).
5. “HL7 Standards Product Brief - FHIR® R4 (HL7 Fast Healthcare Interoperability Resources, Release 4) | HL7 International.” https://www.hl7.org/implement/standards/product_brief.cfm?product_id=491 (accessed Dec. 08, 2021).