Cite
MLA Citation
Yonathan Freund et al.. “PERC rule to exclude the diagnosis of pulmonary embolism in emergency low-risk patients: study protocol for the PROPER randomized controlled study.” Trials, vol. 16, no. 1, 2015, pp. 1–8. http://access.bl.uk/ark:/81055/vdc_100080354133.0x000078