<xs:sequence>
<xs:element name="dbRef" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
- <xs:attribute name="source"/>
- <xs:attribute name="version"/>
- <xs:attribute name="accessionId"/>
+ <xs:attribute name="source" type="xs:string"/>
+ <xs:attribute name="version" type="xs:string"/>
+ <xs:attribute name="accessionId" type="xs:string"/>
<xs:attribute name="id" type="xs:ID" use="optional"/>
</xs:complexType>
</xs:element>