<xs:schema xmlns="http://www.rixg.org.uk/" xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.rixg.org.uk/">
    <xs:simpleType name="NV_RR14">

        <xs:restriction base="xs:string">

            <xs:enumeration value="10">
                <xs:annotation>
                    <xs:documentation>Heart</xs:documentation>
                </xs:annotation>
            </xs:enumeration>

            <xs:enumeration value="11">
                <xs:annotation>
                    <xs:documentation>Lungs</xs:documentation>
                </xs:annotation>
            </xs:enumeration>

            <xs:enumeration value="12">
                <xs:annotation>
                    <xs:documentation>Liver</xs:documentation>
                </xs:annotation>
            </xs:enumeration>

            <xs:enumeration value="13">
                <xs:annotation>
                    <xs:documentation>Pancreas</xs:documentation>
                </xs:annotation>
            </xs:enumeration>

            <xs:enumeration value="14">
                <xs:annotation>
                    <xs:documentation>Intestines</xs:documentation>
                </xs:annotation>
            </xs:enumeration>

        </xs:restriction>

    </xs:simpleType>
</xs:schema>