Sandblom , G., Granroth , S. and Rasmussen , I. C. (2008) “TPS, CA 19-9, VEGF-A, and CEA as Diagnostic and Prognostic Factors in Patients with Mass Lesions in the Pancreatic Head”, Upsala Journal of Medical Sciences, 113(1), pp. 57-64. doi: 10.3109/2000-1967-214.