1. From the Department of Internal Medicine, University of Ferrara, Ferrara (G.Z., G.B., R.F.), and the Institute of Terapia Medica Sistematica (M.A., F.C., A.M., G.R.) and Service of Nuclear Medicine (A.S., M.C.), Department of Internal Medicine II, University of Rome “La Sapienza,” Rome, Italy; Vanderbilt University Medical School, Nashville, Tenn (S.F.); and the Institute of Pharmacological Science, University of Milan, Milan (S.B.), and the Department of Internal Medicine, University of Sassari,...