title: Response to letter to the editor re 'Relationship between exercise test performance and lung function in CF'.
authors.affiliation: CF-Center Utrecht, UMC Utrecht, Utrecht, The Netherlands.
authors.forename: W R
authors.initials: WR
authors.lastname: Doeleman
authors.affiliation: CF-Center Utrecht, UMC Utrecht, Utrecht, The Netherlands.
authors.forename: T
authors.initials: T
authors.lastname: Takken
authors.affiliation: CF-Center Utrecht, UMC Utrecht, Utrecht, The Netherlands. Electronic address: h.hulzebos@umcutrecht.nl.
authors.forename: E
authors.initials: E
authors.lastname: Hulzebos
mesh_terms: D003550:Cystic Fibrosis; D015444:Exercise; D005080:Exercise Test; D017079:Exercise Tolerance; D006801:Humans