1 Department of Medical Area (DAME), University of Udine, Udine, Italy. Electronic address: rossana.domenis@uniud.it.
2 Unit of Neonatology, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy.
3 Department of Medical Area (DAME), University of Udine, Udine, Italy.
4 Department of Medical Area (DAME), University of Udine, Udine, Italy; Department of Laboratory Medicine, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy.
5 Department of Laboratory Medicine, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy.