Alexander Bürkle1
, Graziella Caselli2
, Claudio Franceschi3
, Erminia Mariani4,5
, Paolo Sansoni6
, Angela Santoni7
, Giancarlo Vecchio8
, Jacek M Witkowski9
and Calogero Caruso10 
1Department of Biology, Box X911, University of Konstanz, Konstanz, Germany
2Department of Demographic Sciences, University "La Sapienza" of Rome, Rome, Italy
3Department of Experimental Pathology and CIG – Interdepartmental Center "L. Galvani", University of Bologna, Italy
4Immunology and Genetics Laboratory, Institute Codivilla-Putti, Bologna, Italy
5Department of Internal Medicine and Gastroenterology of University of Bologna, Bologna, Italy
6Department of Internal Medicine and Biomedical Sciences, University of Parma, Parma, Italy
7Department of Experimental Medicine, University "La Sapienza" of Rome, Rome, Italy
8Department of Cellular and Molecular Biology and Pathology, University of Naples Federico II, Naples, Italy
9Department of Pathophysiology, Medical University of Gdansk, Gdansk, Poland
10Immunosenescence Unit, Department of Pathobiology and Biomedical Methodologies, University of Palermo, Palermo, Italy