1. Entry
     CCD Reference (2.16.840.1.113883.3.1937.777.4.10.22)
    1. Entry
       CCD ExternalAct (2.16.840.1.113883.3.1937.777.4.10.23)
    2. Entry
       CCD ExternalObservation (2.16.840.1.113883.3.1937.777.4.10.24)
    3. Entry
       CCD ExternalProcedure (2.16.840.1.113883.3.1937.777.4.10.25)
    4. Entry
       CCD ExternalDocument (2.16.840.1.113883.3.1937.777.4.10.26)