Prevalence of deep vein thrombosis and pulmonary embolism in patients with superficial vein thrombosis: a systematic review and meta-analysis - Di Minno, MN; Ambrosino, P; Ambrosini, F; Tremoli, E; Di Minno, G; Dentali, F (J Thromb Haemost, 2016)
doi: 10.1111/jth.13279. Epub 2016 Mar 15.