title: [A reflection on the past to give an explanation to the present].
authors.affiliation: Ist. di Igiene G. Sanarelli, Università degli Studi di Roma La Sapienza.
authors.forename: C
authors.initials: C
authors.lastname: Melino
authors.forename: R
authors.initials: R
authors.lastname: Del Vecchio
authors.forename: L
authors.initials: L
authors.lastname: Druda
mesh_terms: D049691:History, Medieval; D016519:Hospitals, Religious / Q000266:history*; D012384:Rome