1. Department of Cardiovascular, Neural and Metabolic Sciences, Istituto Auxologico Italiano IRCCS, Ospedale San Luca, Milano, Italy (C.B., S.C., A.F., G.B.P., L.P.B., G.P.).
2. Department of Medicine and Surgery (C.B., L.P.B., G.P.), University of Milano-Bicocca, Italy.
3. Department of Management, Information and Production Engineering, University of Bergamo, Dalmine, Italy (S.C.).
4. IRCCS Istituto Auxologico Italiano, Biostatistics Unit, Milan, Italy (D.S., A.Z.).
5. Department of Cardiology, Cliniques Universitaires de Bruxelles, Hôpital Académique Erasme, Belgium (C.D., A.B., J.-L.V.).
6. Department of Statistic and Quantitative Methods (A.Z.), University of Milano-Bicocca, Italy.
7. Cardiovascular Department, ASST Papa Giovanni XXIII, Bergamo, Italy (M.S.).