1. Entry
     BC CDA Performer (Body) (2.16.840.1.113883.3.1818.10.4.19)
    1. Header
       BC CDA assignedEntity (2.16.840.1.113883.3.51.60.1.7.1)
      1. Header
         BC CDA Person (2.16.840.1.113883.3.51.60.1.5.2)