This is the ValueSet that contains all the codes in Giới tính — Vietnam Gender ValueSet (http://fhir.hl7.org.vn/core/ValueSet/vn-gender-vs) and Giới tính — Vietnam Gender ValueSet (http://fhir.hl7.org.vn/core/ValueSet/vn-gender-vs). E.g. what you have to deal with if you get resources containing codes in either of them