1. Entry
     XeH Family History Observation (2.16.840.1.113883.2.51.10.20)
    1. Entry
       XeH Age Observation (2.16.840.1.113883.2.51.10.21)
    2. Entry
       XeH Family History Death Observation (2.16.840.1.113883.2.51.10.22)