Mind the gaps in research on the control of gastrointestinal nematodes of farmed ruminants and pigs

J Charlier, S M Thamsborg, D J Bartley, P J Skuce, F Kenyon, T Geurden, H Hoste, A R Williams, S Sotiraki, J Höglund, C Chartier, P Geldhof, J van Dijk, L Rinaldi, E R Morgan, G von Samson-Himmelstjerna, J Vercruysse, E Claerebout