by Hagen, Knut
Published in Journal of headache and pain (06.03.2024)

by Stovner, Lars Jacob, Hagen, Knut, Linde, Mattias, Steiner, Timothy J.
Published in Journal of headache and pain (12.04.2022)

by Giri, Samita, Tronvik, Erling Andreas, Hagen, Knut
Published in Journal of headache and pain (21.01.2022)

by Heuch, Ingrid, Heuch, Ivar, Hagen, Knut, Zwart, John-Anker
Published in Spine (Philadelphia, Pa. 1976) (15.01.2013)

by Heuch, Ingrid, Heuch, Ivar, Hagen, Knut, Zwart, John-Anker
Published in PloS one (10.04.2017)

by Heuch, Ingrid, Hagen, Knut, Heuch, Ivar, Nygaard, Øystein, Zwart, John-Anker
Published in Spine (Philadelphia, Pa. 1976) (01.04.2010)

by Hagen, Knut, Stovner, Lars Jacob, Zwart, John-Anker
Published in Journal of headache and pain (11.03.2020)

by Heuch, Ingrid, Heuch, Ivar, Hagen, Knut, Storheim, Kjersti, Zwart, John-Anker
Published in BMC musculoskeletal disorders (31.01.2023)

by Laurell, Katarina, Artto, Ville, Bendtsen, Lars, Hagen, Knut, Häggström, Johan, Linde, Mattias, Söderström, Lars, Tronvik, Erling, Wessman, Maija, Zwart, John Anker, Kallela, Mikko
Published in Cephalalgia (01.09.2016)

by Heuch, Ingrid, Heuch, Ivar, Hagen, Knut, Zwart, John-Anker
Published in PloS one (27.10.2015)

by Heuch, Ingrid, Heuch, Ivar, Hagen, Knut, Storheim, Kjersti, Zwart, John-Anker
Published in BMC public health (15.10.2020)

by Heuch, Ingrid, Heuch, Ivar, Hagen, Knut, Zwart, John-Anker
Published in BMC public health (11.04.2016)

by Hagen, Knut, Stovner, Lars Jacob, Nilsen, Kristian Bernhard, Kristoffersen, Espen Saxhaug, Winsvold, Bendik Slagsvold
Published in BMC neurology (26.09.2019)

by Kristoffersen, Espen Saxhaug, Børte, Sigrid, Hagen, Knut, Zwart, John-Anker, Winsvold, Bendik Slagsvold
Published in Journal of headache and pain (06.08.2020)

by Hagen, Knut, Stovner, Lars Jacob, Zwart, John-Anker
Published in Journal of headache and pain (05.06.2020)

by Giri, Samita, Tronvik, Erling, Linde, Mattias, Hagen, Knut
Published in Cephalalgia Reports (2022)

by Heuch, Ingrid, Heuch, Ivar, Hagen, Knut, Zwart, John-Anker
Published in PloS one (18.09.2014)

by Heuch, Ingrid, Heuch, Ivar, Hagen, Knut, Storheim, Kjersti, Zwart, John-Anker
Published in BMJ open (24.02.2022)

by Hagen, Knut, Åsberg, Anders Nikolai, Uhlig, Benjamin L., Tronvik, Erling, Brenner, Eiliv, Stjern, Marit, Helde, Grethe, Gravdahl, Gøril Bruvik, Sand, Trond
Published in Journal of headache and pain (20.03.2018)

by Filosa, James, Petter Moe Omland, Hagen, Knut, Langsrud, Knut, Engstrøm, Morten, Sand, Trond
Published in Sleep disorders (01.01.2024)