1. Header
     CDA author (2.16.840.1.113883.2.6.60.2.10.2002)
    1. Header
       CDA Person Elements (2.16.840.1.113883.2.6.60.2.10.900200)
    2. Header
       CDA Organization Elements (2.16.840.1.113883.2.6.60.2.10.900201)