 		'Route',
 		'Procedure',
 		--added 30-Aug-2019
-		'Modality'
-		--need to be added, requires further analysis of relationships
-		/*
-		'BioCondition',
+		'Modality', 
 		'Condition',
-		'Condition Class'
-		*/
+		--added 4/28/2020
+		'Regimen Class'
 		)
-	AND h.concept_name IS NOT NULL;
+	AND h.concept_name IS NOT NULL ;
 
 --4. Create concept_relationship_stage
 INSERT INTO concept_relationship_stage

	r.vocabulary_id_1,
	r.vocabulary_id_2,
	r.relationship_id,
	r.valid_start_date,
	r.valid_end_date,
	r.invalid_reason
FROM sources.hemonc_crs r
JOIN concept_stage cs ON cs.concept_code = r.concept_code_1

				'Brand Name',
				'Component Class',
				'Route',
				'Regimen Class'
				)
			THEN 'Drug'
		WHEN h.concept_class_id IN (
				'Condition'
				)
			THEN 'Condition'
		WHEN h.concept_class_id IN (
