1. Clinical Hospital Center „Dr Dragiša Mišović“ - Dedinje, Belgrade
2. Institute for Medical Statistics and Informatics, Belgrade + Faculty of Medicine, Belgrade
3. Faculty of Medicine, Belgrade + Institute for Social Medicine, Belgrade
4. Clinical Center of Serbia, Clinic for Pulmology, Belgrade
5. Clinical Hospital Center Zemun, Belgrade
6. Clinical Hospital Center „Dr Dragiša Mišović“ - Dedinje, Belgrade + Faculty of Medicine, Belgrade