cardiovascular surgery
narrower: lung transplants
narrower: heart transplants
narrower: angioplasty
broader: surgery
type: Concept

angioplasty
type: Concept
broader: cardiovascular surgery

surgery
type: Concept
narrower: cardiovascular surgery

lung transplants
type: Concept
broader: cardiovascular surgery

concepts
type: Collection
type: ConceptGroup
member: cardiovascular surgery

heart transplants
type: Concept
broader: cardiovascular surgery