4 S.C.D.U. Clinical Biochemistry Laboratory, Department of Health Sciences, Università del Piemonte Orientale, "Maggiore della Carità" University Hospital, Novara, Italy.
5 S.C. Laboratory Analysis, S. Giovanni Bosco Hospital, Torino, Italy.
6 S.C. Laboratory Analysis, AOU Città della Salute e della Scienza, Torino, Italy.
7 Department of Clinical Pathology and Clinical Biochemistry, UniTo, Torino, Italy.