ItemRef Example

            <ItemGroupDef OID="INCLUSION" Name="Inclusion Criteria" Repeating="No">
                <ItemRef ItemOID="ID.GENDER" Mandatory="Yes">
                    <Origin Type="Collected" Source="Sponsor"></Origin>
                </ItemRef>
                <ItemRef ItemOID="ID.ISPREG" Mandatory="Yes" CollectionExceptionConditionOID="CECID.ISMALE"/>
                <Origin Type="Collected" Source="Sponsor">
                    <Source>
                        <SourceItem>
                            <Resource Type="ODM" Name="ItemDef" Label="Gender">
                                <Selection Path="../../ItemDef[@OID='ID.GENDER']/@Value"></Selection>
                            </Resource>
                        </SourceItem>
                    </Source>
                </Origin>
            </ItemGroupDef>
            ...

            <ConditionDef OID="CECID.ISMALE" Name="Subject's gender is Male">
                <Description>
                    <TranslatedText xml:lang="en" type="text/plain">Do not collect data for Male subjects</TranslatedText>
                </Description>
                <MethodSignature>
                    <Parameter Name="Gender" DataType="text"/>
                    <ReturnValue Name="IsMale" DataType="boolean"/>
                </MethodSignature>
                <FormalExpression Context="PL/SQL">
                    <Code>IsMale = (Gender := 'Male')</Code>
                </FormalExpression>
            </ConditionDef>