Header
CDA2 legalAuthenticator (2.16.840.1.113883.3.1937.99.61.30.10.72)
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CDA AssignedEntity (2.16.840.1.113883.10.12.153)
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CDA Person (2.16.840.1.113883.10.12.152)
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CDA Organization (2.16.840.1.113883.10.12.151)