def _build_cohort_row(self, cohort_id, patient_barcode=None, sample_barcode=None, aliquot_barcode=None):
    return {'cohort_id': cohort_id, 'patient_barcode': patient_barcode, 'sample_barcode': sample_barcode, 'aliquot_barcode': aliquot_barcode}
def _build_cohort_row(self, cohort_id, patient_barcode=None, sample_barcode=None, aliquot_barcode=None):
    return {'cohort_id': cohort_id, 'patient_barcode': patient_barcode, 'sample_barcode': sample_barcode, 'aliquot_barcode': aliquot_barcode}