<affiliation wicri:level="4"><nlm:affiliation>Institute of Veterinary Bacteriology, University of Zürich, Winterthurerstr. 270, Zürich, Switzerland.</nlm:affiliation>
<country xml:lang="fr">Suisse</country>
<wicri:regionArea>Institute of Veterinary Bacteriology, University of Zürich, Winterthurerstr. 270, Zürich</wicri:regionArea>
<placeName><settlement type="city">Zurich</settlement>
<region nuts="3" type="region">Canton de Zurich</region>
</placeName>
<orgName type="university">Université de Zurich</orgName>
</affiliation>