<group>    <question> <answer> <valueCoding> <system value="http://cancer.questionnaire.org/system/code/yesno"/> <code value="1"/> <display value="Yes"/> </valueCoding> <group>   <question> <answer> <valueCoding> <system value="http://cancer.questionnaire.org/system/code/yesno"/> <code value="1"/> </valueCoding> </answer> </question> <question>  <answer> <valueCoding> <system value="http://cancer.questionnaire.org/system/code/yesno"/> <code value="1"/> </valueCoding> </answer> </question> <question> <answer> <valueCoding> <system value="http://cancer.questionnaire.org/system/code/yesno"/> <code value="0"/> </valueCoding> </answer> </question> </group> </answer> </question> </group>   </group> </QuestionnaireResponse>

            Comorbidity? YES
              Cardial Comorbidity? YES
                Angina? YES
                MI? NO
              Vascular Comorbidity?
                (no answers)
              ...
            Histopathology
              Abdominal
                pT category: 1a
              ...


  
  
    
  
  
    
  
  
  
    
    <group>
    <!--    COMORBIDITY    -->
    <!--    First main section of the form, questions about comorbidity    -->
    <!--    section contains one question: whether there is comorbidity    -->
      <question>
        <answer>
          <valueCoding>
            <system value="http://cancer.questionnaire.org/system/code/yesno"/>
            <code value="1"/>
            <display value="Yes"/>
          </valueCoding>
          <group>
          <!--    COMORBIDITY/CARDIAL    -->
          <!--    Subsection about specific comorbidity: cardial    -->
            <question>
              <answer>
                <valueCoding>
                  <system value="http://cancer.questionnaire.org/system/code/yesno"/>
                  <code value="1"/>
                </valueCoding>
              </answer>
            </question>
            <question>
            <!--    This answer carries both the questionnaire-specific name and an equivalent SNOMED CT code    -->
              <answer>
                <valueCoding>
                  <system value="http://cancer.questionnaire.org/system/code/yesno"/>
                  <code value="1"/>
                </valueCoding>
              </answer>
            </question>
            <question>
              <answer>
                <valueCoding>
                  <system value="http://cancer.questionnaire.org/system/code/yesno"/>
                  <code value="0"/>
                </valueCoding>
              </answer>
            </question>
          </group>
        </answer>
      </question>
    </group>
  <!--    HISTOPATHOLOGY    -->
  <!--    TODO: decide how to do this
    <group>

      <group>
        <question>
         <dataResource>
            <reference value="#obs.pt-category"/>
          </dataResource>
        </question>
      </group>
    </group>    -->
  </group>
</QuestionnaireResponse>