@article{Holmen2003,
author = {Holmen, J. and Midthjell, K. and Krüger, Ø. and Langhammer, A. and Holmen, T.L. and Bratberg, G.H. and Lund-Larsen, P.G.},
title= {The Nord-Trøndelag Health Study 1995–97 (HUNT 2): Objectives, contents, methods and participation},
year = {2003},
doi = {10.5324/nje.v13i1.305},
volume = {13},
number = {1},
pages = {19--32},
}