1. Entry
     TNM N-Observation (2.16.840.1.113883.3.1937.99.61.5.10.900297)
    1. Entry
       TNM N-i (2.16.840.1.113883.3.1937.99.61.5.10.900300)
    2. Entry
       TNM N mol (2.16.840.1.113883.3.1937.99.61.5.10.900299)
    3. Entry
       TNM N-Lymphknoten (2.16.840.1.113883.3.1937.99.61.5.10.900298)