This is the ValueSet that contains codes in both Phương pháp vô cảm — Vietnam Anesthesia Method ValueSet (http://fhir.hl7.org.vn/core/ValueSet/vn-anesthesia-method-vs) and Phương pháp vô cảm — Vietnam Anesthesia Method ValueSet (http://fhir.hl7.org.vn/core/ValueSet/vn-anesthesia-method-vs).