1. Document
     UNICOM ePrescription PDF embedded (2.16.840.1.113883.3.1937.777.78.10.6)
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       eHDSI Id (2.16.840.1.113883.3.1937.777.11.10.110)
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       eHDSI SetId (2.16.840.1.113883.3.1937.777.11.10.108)
    3. Header
       eHDSI RecordTarget (2.16.840.1.113883.3.1937.777.11.10.100)
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       eHDSI Author Prescriber (2.16.840.1.113883.3.1937.777.11.10.103)
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         eHDSI Organization (2.16.840.1.113883.3.1937.777.11.10.111)
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       eHDSI Custodian (2.16.840.1.113883.3.1937.777.11.10.104)
    6. Header
       eHDSI LegalAuthenticator (2.16.840.1.113883.3.1937.777.11.10.109)
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         eHDSI Organization (2.16.840.1.113883.3.1937.777.11.10.111)
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       eHDSI RelatedDocument (2.16.840.1.113883.3.1937.777.11.10.107)