title: [WHO-recommended tuberculin PPD RT 23 SSI now approved in Germany].
authors.affiliation: Deutsches Zentralkomitee zur Bekämpfung der Tuberkulose, Berlin.
authors.forename: D
authors.initials: D
authors.lastname: Sagebiel
authors.forename: K
authors.initials: K
authors.lastname: Magdorf
authors.forename: R
authors.initials: R
authors.lastname: Loddenkemper
mesh_terms: D005858:Germany; D011786:Quality Control; D014374:Tuberculin Test / Q000592:standards*; D014944:World Health Organization