title: Erratum to: Validity of data collected in BIOREG, the Austrian register for biological treatment in rheumatology: current practice of bDMARD therapy in rheumatoid arthritis in Austria.
authors.affiliation: Lower Austrian State Hospital Stockerau, 2nd Department for internal medicine, Lower Austrian Center for Rheumatology, Landstrasse 18, Stockerau, 2000, Austria. bernhard.rintelen@stockerau.lknoe.at.|Karl Landsteiner Institute for Clinical Rheumatology, Landstrasse 18, Stockerau, 2000, Austria. bernhard.rintelen@stockerau.lknoe.at.
authors.forename: Bernhard
authors.initials: B
authors.lastname: Rintelen
authors.affiliation: Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling, 1st Medical Department, Hanusch Hospital Vienna, Heinrich-Collinstrasse 30, Vienna, 1140, Austria.
authors.forename: Jochen
authors.initials: J
authors.lastname: Zwerina
authors.affiliation: Medical University of Innsbruck, Anichstrasse 35, Innsbruck, 6020, Austria.
authors.forename: Manfred
authors.initials: M
authors.lastname: Herold
authors.affiliation: BIOREG, Schloßhoferstrasse 4/4/12, Vienna, 1221, Austria.
authors.forename: Franz
authors.initials: F
authors.lastname: Singer
authors.affiliation: Health Center Vienna Mariahilf, Wiener Gebietskrankenkasse, Mariahilfer Strasse 85-87, Vienna, 1060, Austria.
authors.forename: Johann
authors.initials: J
authors.lastname: Hitzelhammer
authors.affiliation: Tyrolean State Hospital Hochzirl, Hochzirl, 6170, Austria.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Halder
authors.affiliation: Office based rheumatologist, Freistätter Strasse 16, Linz, 4040, Austria.
authors.forename: Gabriela
authors.initials: G
authors.lastname: Eichbauer-Sturm
authors.affiliation: Office based rheumatologist, Freiung 19, Wels, 4070, Austria.
authors.forename: Rudolf
authors.initials: R
authors.lastname: Puchner
authors.affiliation: Department for Internal Medicine, Lower Austrian State Hospital Amstetten, Krankenhausstrasse 21, Amstetten, 3300, Austria.
authors.forename: Miriam
authors.initials: M
authors.lastname: Stetter
authors.affiliation: Lower Austrian State Hospital Stockerau, 2nd Department for internal medicine, Lower Austrian Center for Rheumatology, Landstrasse 18, Stockerau, 2000, Austria.|Karl Landsteiner Institute for Clinical Rheumatology, Landstrasse 18, Stockerau, 2000, Austria.|Medical University of Graz, Auenbruggerplatz 2, Graz, 8010, Austria.
authors.forename: Burkhard F
authors.initials: BF
authors.lastname: Leeb