<xsd:complexType name="PPR_PC1.CONTENT"> <xsd:sequence> <xsd:element ref="MSH" minOccurs="1" maxOccurs="1" /> <xsd:element ref="PID" minOccurs="1" maxOccurs="1" /> <xsd:element ref="PPR_PC1.PATIENT_VISIT" minOccurs="0" maxOccurs="1" /> <xsd:element ref="PPR_PC1.PROBLEM" minOccurs="1" maxOccurs="unbounded" /> </xsd:sequence> </xsd:complexType>