def gene_panels(self, panel_id=None, institute_id=None, version=None):
        """Return all gene panels

        If panel_id return all versions of panels by that panel name

        Args:
            panel_id(str)

        Returns:
            cursor(pymongo.cursor)
        """
        query = {}
        if panel_id:
            query['panel_name'] = panel_id
            if version:
                query['version'] = version
        if institute_id:
            query['institute'] = institute_id

        return self.panel_collection.find(query)
Return all gene panels

        If panel_id return all versions of panels by that panel name

        Args:
            panel_id(str)

        Returns:
            cursor(pymongo.cursor)