title: Response to Forbes's comment.
authors.affiliation: Department of Medicine and Surgery, University of Salerno, Salerno, Italy.
authors.forename: Carolina
authors.initials: C
authors.lastname: Ciacci
authors.affiliation: Department of Gastroenterology, Kings College London, London, UK; The Rayne Institute, St Thomas Hospital, London, UK.
authors.forename: Paul
authors.initials: P
authors.lastname: Ciclitira
authors.affiliation: Academic Department of Neurosciences, Royal Hallamshire Hospital, Sheffield, UK.
authors.forename: Marios
authors.initials: M
authors.lastname: Hadjivassiliou
authors.affiliation: School of Medicine, University of Tampere, Tampere, Finland; Department of Internal Medicine, Tampere University Hospital, Tampere, Finland; Department of Internal Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland.
authors.forename: Katri
authors.initials: K
authors.lastname: Kaukinen
authors.affiliation: Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Department of Pediatrics, Örebro University Hospital, Orebro, Sweden.
authors.forename: Jonas F
authors.initials: JF
authors.lastname: Ludvigsson
authors.affiliation: Coeliac UK, High Wycombe, UK.
authors.forename: Norma
authors.initials: N
authors.lastname: McGough
authors.affiliation: Gastroenterology and Liver Unit, Royal Hallamshire Hospital, Sheffield, UK.
authors.forename: David S
authors.initials: DS
authors.lastname: Sanders
authors.affiliation: Cambridge Intestinal Unit, Addenbrooke's Hospital, Cambridge, UK.
authors.forename: Jeremy
authors.initials: J
authors.lastname: Woodward
authors.affiliation: Department of Dermatology, St Mary's Hospital, London, UK.
authors.forename: Jonathan N
authors.initials: JN
authors.lastname: Leonard
authors.affiliation: Department of Gastroenterology, University Hospital Llandough, Cardiff, UK.
authors.forename: Gillian L
authors.initials: GL
authors.lastname: Swift