1. CHU Rangueil Toulouse; Toulouse France
2. Klinikum Fulda; Fulda Germany
3. Ospedale Maggiore Policlinico; Milan Italy
4. Hospital Clínico San Carlos; Madrid Spain
5. Klinikum Ludwigshafen; Ludwigshafen Germany
6. Clinical Hospital Centre Zemun, Faculty of Medicine; University of Belgrade; Belgrade Serbia
7. Hospital Meixoeiro Vigo; Vigo Spain
8. University Hospital La Paz; Madrid Spain
9. Clinical Centre of Serbia, Faculty of Medicine; University of Belgrade; Belgrade Serbia