To achieve its goals, CLEO has developed partnerships with the following institutions:
- Hospitals and Universities Abroad
- Selected Departments of General and University Hospitals – Universities
- Non-Profit Organizations
- Hellenic Society for Pharmacoepidemiology (ELEFEP)
Collaborating Hospitals & Universities Abroad:
- University of Pennsylvania: Perelman School of Medicine
- Children’s Hospital of Philadelphia (CHOP): Department of Infectious Diseases
- St George’s University of London
- Ondokuz Mayis University Hospital, Turkey
- Eskisehir Osmangazi University, Turkey
- Gazi University Faculty of Medicine, Ankara, Turkey
- Federal Scientific and Clinical Centre of Pediatric Hematology, Russia
- Vanderbilt University
- Columbia University

