Medicine (Baltimore) 2016 Oct;95(42):e5143
C.R.E.A. Sanità (Consortium for Applied Economic Research in Healthcare), Department of Economic and Finance, University of Rome "Tor Vergata" Clinical infectious Disease, Department of Medicine of Systems, Tor Vergata University Hospital Department of Economic and Finance, University of Rome "Tor Vergata", C.R.E.A. Sanità (Consortium for Applied Economic Research in Healthcare), Italy.