1. VA Medical Center, Minneapolis, Minnesota, USAUniversity of Minnesota, Minneapolis, Minnesota, USA
2. Max von Pettenkofer-Institut für Hygiene und Medizinische Mikrobiologie, München, Germany
3. Centre Hospitalier Universitaire Purpan, Toulouse, France
4. Hôpital Morvan, Brest, France
5. HaEmek Medical Center, Afula, Israel
6. HaEmek Medical Center, Afula, IsraelTechnion School of Medicine, Afula, Israel