title: Prospective multihospital surveillance studies--a controversy.
authors.forename: E
authors.initials: E
authors.lastname: Simchen
authors.forename: Y
authors.initials: Y
authors.lastname: Wax
authors.forename: M
authors.initials: M
authors.lastname: Shapiro
authors.forename: T
authors.initials: T
authors.lastname: Sacks
mesh_terms: D003428:Cross Infection / Q000517:prevention & control*; D006801:Humans; D011446:Prospective Studies; D013530:Surgical Wound Infection / Q000517:prevention & control*