1 Departiment of Internal Medicine, University of Piemonte Orientale, Novara, Italy.
2 Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy.
3 Department of Internal Medicine, Marche Polytechnic University, Ancona, Italy.
4 Internal Medicine and Stroke Care Ward, Department of Promoting Health, Maternal-Infant, Excellence and Internal and Specialized Medicine (PROMISE), University of Palermo, Palermo, Italy. pacinella66@gmail.com.