1. Dept. of Biomedicine and Prevention, University of Tor Vergata, Rome, Italy.
2. Dept. of Laboratory Diagnostics and Molecular Medicine, Pomeranian Medical University, Poland.
3. Dept. of Cardiology, Valmontone Hospital, Italy.
4. Dept. of Biochemistry and Medical Chemistry, Pomeranian Medical University, Poland.
5. Dept. of Neonatology, Pomeranian Medical University, Poland.
6. Dept. of Cardiology, Pomeranian Medical University, Poland.