1 University of Pavia, First Department of Internal Medicine, Clinica Medica, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy.
2 Clinical Epidemiology and Biometry, IRCCS San Matteo Hospital Foundation, University of Pavia, Pavia, Italy.
3 University of Pavia, First Department of Internal Medicine, Clinica Medica, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy. [email protected].