title: Reply to comment: Month of birth and risk of multiple sclerosis: confounding and adjustments.
authors.affiliation: Norwegian Multiple Sclerosis Competence Centre, Department of Neurology, Haukeland University Hospital Bergen, Norway ; Kristian Gerhard Jebsen Centre for MS Research, Department of Clinical Medicine, University of Bergen Bergen, Norway.
authors.forename: Oivind
authors.initials: O
authors.lastname: Torkildsen
authors.affiliation: Norwegian Multiple Sclerosis Competence Centre, Department of Neurology, Haukeland University Hospital Bergen, Norway ; Kristian Gerhard Jebsen Centre for MS Research, Department of Clinical Medicine, University of Bergen Bergen, Norway.
authors.forename: Jan
authors.initials: J
authors.lastname: Aarseth
authors.affiliation: Department of Neurology, Oslo University Hospital Ullevål, Oslo, Norway.
authors.forename: Elisabeth Gulowsen
authors.initials: EG
authors.lastname: Celius
authors.affiliation: Department of Neurology, Akershus University Hospital Lørenskog, Norway ; Institute of Clinical Medicine, University of Oslo Oslo, Norway.
authors.forename: Trygve
authors.initials: T
authors.lastname: Holmøy
authors.affiliation: Deptartment of Neurology, University Hospital of North Norway Tromsø, Norway.
authors.forename: Margitta T
authors.initials: MT
authors.lastname: Kampman
authors.affiliation: Institute of Clinical Medicine, University of Oslo Oslo, Norway ; Innlandet Hospital Trust Lillehammer, Norway.
authors.forename: Kristin Ingeleiv
authors.initials: KI
authors.lastname: Løken-Amsrud
authors.affiliation: Department of Neurology, Molde Hospital Molde, Norway ; Unit for Applied Clinical Research, Norwegian University of Science and Technology Trondheim, Norway.
authors.forename: Rune
authors.initials: R
authors.lastname: Midgard
authors.affiliation: Norwegian Multiple Sclerosis Competence Centre, Department of Neurology, Haukeland University Hospital Bergen, Norway ; Kristian Gerhard Jebsen Centre for MS Research, Department of Clinical Medicine, University of Bergen Bergen, Norway.
authors.forename: Kjell-Morten
authors.initials: KM
authors.lastname: Myhr
authors.affiliation: Department of Public Health and Primary Health Care, University of Bergen Bergen, Norway.
authors.forename: Trond
authors.initials: T
authors.lastname: Riise
authors.affiliation: Norwegian Multiple Sclerosis Competence Centre, Department of Neurology, Haukeland University Hospital Bergen, Norway ; Kristian Gerhard Jebsen Centre for MS Research, Department of Clinical Medicine, University of Bergen Bergen, Norway.
authors.forename: Nina
authors.initials: N
authors.lastname: Grytten