The HUNT4 study: the validity of questionnaire-based diagnoses

by Knut Hagen, Anders Nikolai Åsberg, Benjamin L. Uhlig, Erling Tronvik, Eiliv Brenner, Trond Sand
Published 2019-06-01

The epidemiology of headache disorders: a face-to-face interview of participants in HUNT4

by Knut Hagen, Anders Nikolai Åsberg, Benjamin L. Uhlig, Erling Tronvik, Eiliv Brenner, Marit Stjern, Grethe Helde, Gøril Bruvik Gravdahl, Trond Sand
Published 2018-03-01