1. Institute for Maternal and Child Health, Istituto di Ricovero e Cura a Carattere Scientifico Burlo Garofolo, Trieste, Italy;
2. Department of Life Sciences, University of Trieste, Trieste, Italy;
3. Department Health Sciences and Research Institute Against Digestive Cancer, University of Eastern Piedmont, Novara, Italy;
4. Laboratory of Immuno-Rheumatology, Istituto di Ricovero e Cura a Carattere Scientifico Istituto Auxologico Italiano, Milan, Italy; and
5. Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy