task Union

  task RectalCancer

    # Is the cancer metastased
    trackvar m_plus
      {Staff:end}
    initially false

    seq
      Consultation
      Endoscopy
      Biopsy
      Staff
      if m_plus
        Chimio
      else
        Radio
      end
      PostTreatment
    end
  end

  task BreastCancer

    # Is the cancer metastased
    trackvar m_plus
      {Staff:end}
    initially false

    seq
      Consultation
      Endoscopy
      Staff
      if m_plus
        RadioChimio
      else
        Radio
      end
      PostTreatment
    end
  end

  par
    RectalCancer
    PostTreatment
  end
end