Erratum in West J Emerg Med. 2019 March;20(2):426. All references to the name Smith (i.e., Smith et al. and Smith and colleagues) should be revised to Vinson. The duration of referenced study in paragraph 4 is incorrect. The duration of the study should read 16 months rather than 14 months. Source: Vinson DR, Warton EM, Mark DG, Ballard DW, Reed ME, Chettipally UK, Singh N, Bouvet SZ, Kea B, Ramos PC, Glaser DS, Go AS, for the TAFFY investigators of the CREST Network. Thromboprophylaxis for patients with high-risk atrial fibrillation and flutter discharged from the Emergency Department. West J Emerg Med. 2018;19(2):346-360.