Abdominal symptoms and cancer in the abdomen: prospective cohort study in European primary care
Knut Holtedahl, Peter Hjertholm, Lars Borgquist, Gé A Donker, Frank Buntinx, David Weller, Tonje Braaten, Jörgen Månsson, Eva Lena Strandberg, Christine Campbell, Joke C Korevaar and Ranjan Parajuli
British Journal of General Practice 2018; 68 (670): e301-e310. DOI: https://doi.org/10.3399/bjgp18X695777