Townsend, Raymond R.Perelman School of Medicine, University of Pennsylvania, Philadelphia, USAMahfoud, FelixKlinik Für Innere Medizin III, Universitätsklinikum Des Saarlandes, Saarland University, HomburgSaar, GermanyTsioufis, KonstantinosHippocratio Hospital, National and Kapodistrian University of Athens...