<xs:restriction base="xs:string">    <xs:enumeration value="GRAV"/>
    <xs:enumeration value="DMC"/>
    <xs:enumeration value="FOLIKUL"/>
    <xs:enumeration value="OVUL"/>
    <xs:enumeration value="LUTEAL"/>
    <xs:enumeration value="PREMENO"/>
    <xs:enumeration value="PERIMENO"/>
    <xs:enumeration value="POSTMENO"/>
    <xs:enumeration value="MENOP"/>
    <xs:enumeration value="PREDPODL"/>
    <xs:enumeration value="POSTPODL"/>
    <xs:enumeration value="KONTPODL"/>
    <xs:enumeration value="VSED"/>
    <xs:enumeration value="VLEZ"/>
    <xs:enumeration value="DRUGDOSE"/>
    <xs:enumeration value="NEZRNOV"/>
    <xs:enumeration value="NASLDIAL"/>
    <xs:enumeration value="POSTDIAL"/>
    <xs:enumeration value="PREDDIAL"/>
  </xs:restriction>