1. Coordinating Centre for Haemovigilance and Surveillance of Transfusion Hellenic National Public Health Organization Attika Greece
2. Panteion University of Social and Political Sciences Athens Greece
3. Blood Centre of the AHEPA University General Hospital Thessaloniki Greece
4. Laboratory of Microbiology Medical School National and Kapodistrian University of Athens Athens Greece
5. First Department of Pediatrics Choremeio Research Laboratory National and Kapodistrian University of Athens Athens Greece
6. Blood Transfusion Service General Anti‐Cancer Hospital Agios Savvas Athens Greece
7. Blood Transfusion Service Hellenic Red Cross Hospital of Athens Athens Greece
8. Blood Transfusion Service General Hospital of Nikaia Agios Panteleimon Athens Greece
9. Blood Transfusion Service Amalia Fleming Prefecture General Hospital of Melissia Athens Greece
10. Blood Transfusion Service ‘Ippokrateio’ General Hospital of Athens Athens Greece
11. Blood Transfusion Service Ioannina University Hospital Ioannina Greece