1. Neonatal Intensive Care Unit "Agios Panteleimon" General Hospital of Nikaia Piraeus Greece
2. Laboratory of Haematology and Blood Bank Unit, "Attiko" Hospital School of Medicine National and Kapodistrian University of Athens Athens Greece
3. Neonatal Department National and Kapodistrian University of AthensAretaeio Hospital Athens Greece
4. Department of Biomedical Sciences Humanitas University Milan Italy
5. Humanitas Clinical and Research Center‐ IRCCS Milan Italy
6. Medical School University of Cyprus Nicosia Cyprus