1. Department of Neurology “P & A Kyriakou” Children's Hospital Athens, Greece, .
2. Department of Microbiology “G. Gennimatas” General Hospital Athens, Greece
3. Department of Neurology “P & A Kyriakou” Children's Hospital Athens, Greece
4. Third Department of Internal Medicine “NINITS” Hospital Athens, Greece
5. Second Department of Pediatrics University of Athens “P & A Kyriakou” Children's Hospital Athens, Greece