title: Erratum to: Effectiveness of initiating extrafine-particle versus fine-particle inhaled corticosteroids as asthma therapy in the Netherlands.
authors.affiliation: Department of General Practice, University of Groningen, University Medical Center, Groningen, The Netherlands.
authors.forename: Thys
authors.initials: T
authors.lastname: van der Molen
authors.affiliation: University of Groningen, University Medical Center Groningen, Department Pulmonary Medicine and Tuberculosis, Groningen, The Netherlands.
authors.forename: Dirkje S
authors.initials: DS
authors.lastname: Postma
authors.affiliation: National Jewish Health and the University of Colorado, Denver, USA.
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Martin
authors.affiliation: PHARMO Institute for Drugs Outcome Research, Utrecht, The Netherlands.
authors.forename: Ron M C
authors.initials: RM
authors.lastname: Herings
authors.affiliation: PHARMO Institute for Drugs Outcome Research, Utrecht, The Netherlands.
authors.forename: Jetty A
authors.initials: JA
authors.lastname: Overbeek
authors.affiliation: Research in Real Life, Ltd, Cambridge, UK.
authors.forename: Victoria
authors.initials: V
authors.lastname: Thomas
authors.affiliation: Research in Real Life, Ltd, Cambridge, UK.
authors.forename: Cristiana
authors.initials: C
authors.lastname: Miglio
authors.affiliation: Radboud University Medical Centre, Nijmegen, The Netherlands.
authors.forename: Richard
authors.initials: R
authors.lastname: Dekhuijzen
authors.affiliation: Groupe Hospitalier Cochin, AP-HP and University Paris Descartes (EA2511), Paris, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Roche
authors.affiliation: Cincinnati Children's Hospital and Medical Center, Cincinnati, USA.
authors.forename: Theresa
authors.initials: T
authors.lastname: Guilbert
authors.affiliation: Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
authors.forename: Elliot
authors.initials: E
authors.lastname: Israel
authors.affiliation: Emma's Children Hospital, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands.
authors.forename: Wim
authors.initials: W
authors.lastname: van Aalderen
authors.affiliation: Research in Real Life, Ltd, Cambridge, UK.
authors.forename: Elizabeth V
authors.initials: EV
authors.lastname: Hillyer
authors.affiliation: Observational & Pragmatic Research Institute Pte, Ltd, Singapore, Singapore.
authors.forename: Simon
authors.initials: S
authors.lastname: van Rysewyk
authors.affiliation: Observational & Pragmatic Research Institute Pte, Ltd, Singapore, Singapore. dprice@rirl.org.|Academic Primary Care, University of Aberdeen, Polwarth Building, Foresterhill, Aberdeen, AB25 2ZD, UK. dprice@rirl.org.
authors.forename: David B
authors.initials: DB
authors.lastname: Price