title: Diphtheria in the 1990s: Return of an old adversary.
authors.affiliation: Respiratory and Systemic Infection Laboratory, Central Public Health Laboratory, London, United Kingdom; and.
authors.forename: Robert C.
authors.initials: RC
authors.lastname: George
authors.forename: Vladimir B.
authors.initials: VB
authors.lastname: Beloborodov
authors.forename: Androulla
authors.initials: A
authors.lastname: Efstratiou