1. Laboratoire de Bactériologie-Virologie-Hygiène, Limoges, France;
2. Centre National de Reference des Staphylocoques, Lyon, France;
3. Service de Réanimation Polyvalente, Limoges, France;
4. Service d'Anatomie Pathologique, Limoges, France;
5. Bioanalytique-Riotton, Geneva, Switzerland;
6. National Institute of Public Health and the Environment, Bilthoven, the Netherlands