<xsd:complexType name="OMG_O19.CONTENT"> <xsd:sequence> <xsd:element ref="MSH" minOccurs="1" maxOccurs="1" /> <xsd:element ref="NTE" minOccurs="0" maxOccurs="unbounded" /> <xsd:element ref="OMG_O19.PATIENT" minOccurs="0" maxOccurs="1" /> <xsd:element ref="OMG_O19.ORDER" minOccurs="1" maxOccurs="unbounded" /> </xsd:sequence> </xsd:complexType>