<xsd:complexType name="ADT_A43.CONTENT"> <xsd:sequence> <xsd:element ref="MSH" minOccurs="1" maxOccurs="1" /> <xsd:element ref="EVN" minOccurs="1" maxOccurs="1" /> <xsd:element ref="ADT_A43.PATIENT" minOccurs="1" maxOccurs="unbounded" /> </xsd:sequence> </xsd:complexType>