P. S. Wells, D. R. Anderson, M. Rodger, I. Stiell, J. F. Dreyer, D. Barnes, M. Forgie, G. Kovacs, J. Ward, M. J. Kovacs: Excluding pulmonary embolism at the bedside without diagnostic imaging: management of patients with suspected pulmonary embolism presenting to the emergency department by using a simple clinical model and d-dimer. In: Ann Intern Med. Band 135, Nr. 2, 17. Jul 2001, S. 98–107. PubMed PMID 11453709.