| Complex Type | ani:classificationType | 
<xs:attribute name="weight"> <xs:simpleType> <xs:restriction base="xs:token"> <xs:enumeration value="-"/> <xs:enumeration value="?"/> <xs:enumeration value="+"/> <xs:enumeration value="++"/> </xs:restriction> </xs:simpleType> </xs:attribute>  | 
                           
| 
                                     < descriptor xmlns = "http://www.elsevier.com/xml/ani/ani" >  | 
                              
| 
                                     laparoscopic right hepatectomy  | 
                              
| 
                                     </ mainterm>  | 
                              
| 
                                     </ descriptor>  |