Search for: [Title = Occupational classification according to work demands\: an evaluation study] OR [Creator = de Zwart, Bart C. H.] OR [Creator = Broersen, Jake P. J.] OR [Creator = van der Beek, Allard J.] OR [Creator = Frings\-Dresen, Monique H. W.] OR [Creator = van Dijk, Frank J. H.]