Original article Search for occult malignancy in patients with deep venous thrombosis: Results of a retrospective cohort study A Ronsdorf, RA Schoenenberger DOI: https://doi.org/10.4414/smw.2003.10295 Publication Date: 18.10.2003 Swiss Med Wkly. 2003;133(41-42):567-574 This text is only available as PDF .