public function getRespondent()
    {
        $patientNumber  = $this->getPatientNumber();
        $organizationId = $this->getOrganizationId();

        if (! ($this->_respondentObject instanceof \Gems_Tracker_Respondent)
                || $this->_respondentObject->getPatientNumber()  !== $patientNumber
                || $this->_respondentObject->getOrganizationId() !== $organizationId) {
            $this->_respondentObject = $this->loader->getRespondent($patientNumber, $organizationId);
        }

        return $this->_respondentObject;
    }