def select_questionnaires(self, no_of_questionnaires=0, from_index=0):
        self._uncheck_all_questionnaires()
        for index in range(from_index, from_index+no_of_questionnaires):
            self.driver.wait_for_element(10,
                                         by_css(".questionnaire-list ul li:nth-child(%s) input[type=checkbox]" % (