Level 3	The ECS is feasible with low morbidity
	The ECS can be combined with lap IPOM, open IPOM, open sublay, and open onlay technique in complex hernias
	Abdominal wall release after ECS is less extensive than after OCS
	There are fewer wound infections and wound healing problems after ECS compared to OCS
Level 4	The question whether the lateral compartment should be augmented with mesh remains unresolved