1. School of Medicine (D.I.T.)
2. National and Kapodistrian University of Athens, Greece. Surgery Working Group (D.I.T., D.M., D.S., K.P.E)
3. Cardiology Working Group (E.K.O.)
4. Society of Junior Doctors, Athens, Greece. Department of Surgery, The Ohio State Comprehensive Cancer Center, The Ohio State University, Columbus (D.M.)
5. First Department of Surgery, Laiko General Hospital (D.S.)
6. Organ Engineering and Regeneration Laboratory (K.P.E.)
7. Pediatrics Working Group (K.S.M.)
8. Department of Pediatric Surgery (K.S.M.), Massachusetts General Hospital, Harvard Medical School, Boston.