1. Department of Microbiology
National School of Public Health
196 Alexandras Ave.
11521 Athens, Greece
2. Laboratory of Bacteriology
Hellenic Pasteur Institute
127 Vas. Sofias Ave.
11521 Athens, Greece
3. Department of Microbiology
Medical School
National and Kapodistrian University of Athens
75 Mikras Asias Str.X,
11527 Athens, Greece