def find_studies(self, query_dict=None, exact=False, verbose=False, **kwargs):
        """Query on study properties. See documentation for _OTIWrapper class."""
        if self.use_v1:
            uri = '{p}/singlePropertySearchForStudies'.format(p=self.query_prefix)
        else:
            uri = '{p}/find_studies'.format(p=self.query_prefix)
        return self._do_query(uri,
                              query_dict=query_dict,
                              exact=exact,
                              verbose=verbose,
                              valid_keys=self.study_search_term_set,
                              kwargs=kwargs)