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Scherr D, Dalal D, Chilukuri K, Dong J, Spragg D, Henrikson CA, et al. Incidence and predictors of left atrial thrombus prior to catheter ablation of atrial fibrillation. <i>J Cardiovasc Electrophysiol<\/i> 2009; 20: 379\u2013384.","DOI":"10.1111\/j.1540-8167.2008.01336.x"},{"key":"2","doi-asserted-by":"crossref","unstructured":"2. Puwanant S, Varr BC, Shrestha K, Hussain SK, Wilson Tang WH, Gabriel RS, et al. Role of the CHADS2 score in the evaluation of thromboembolic risk in patients with atrial fibrillation undergoing transesophageal echocardiography before pulmonary vein isolation. <i>J Am Coll Cardiol<\/i> 2009; 54: 2032\u20132039.","DOI":"10.1016\/j.jacc.2009.07.037"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3. Doukky R. B-type natriuretic peptide predicts left atrial appendage thrombus in patients with nonvalvular atrial fibrillation. <i>Echocardiography<\/i> 2013; 30: 889\u2013895.","DOI":"10.1111\/echo.12169"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4. Rader VJ, Khumri TM, Idupulapati M, Stoner CN, Magalski A, Main ML. Clinical predictors of left atrial thrombus and spontaneous echocardiographic contrast in patients with atrial fibrillation. <i>J Am Soc Echocardiogr<\/i> 2007; 20: 1181\u20131185.","DOI":"10.1016\/j.echo.2007.02.010"},{"key":"5","doi-asserted-by":"crossref","unstructured":"5. Stoddard MF, Singh P, Dawn B, Longaker RA. Left atrial thrombus predicts transient ischemic attack in patients with atrial fibrillation. <i>Am Heart J<\/i> 2003; 145: 676\u2013682.","DOI":"10.1067\/mhj.2003.91"},{"key":"6","doi-asserted-by":"crossref","unstructured":"6. Habara S, Dote K, Kato M, Sasaki S, Goto K, Takemoto H, et al. Prediction of left atrial appendage thrombi in non-valvular atrial fibrillation. <i>Eur Heart J<\/i> 2007; 28: 2217\u20132222.","DOI":"10.1093\/eurheartj\/ehm356"},{"key":"7","doi-asserted-by":"crossref","unstructured":"7. Klein AL, Grimm RA, Murray RD, Apperson-Hansen C, Asinger RW, Black IW, et al. Use of transesophageal echocardiography to guide cardioversion in patients with atrial fibrillation. <i>N Engl J Med<\/i> 2001; 344: 1411\u20131420.","DOI":"10.1056\/NEJM200105103441901"},{"key":"8","doi-asserted-by":"crossref","unstructured":"8. Thambidorai SK, Murray RD, Parakh K, Shah TK, Black IW, Jasper SE, et al. Utility of transesophageal echocardiography in identification of thrombogenic milieu in patients with atrial fibrillation (an ACUTE ancillary study). <i>Am J Cardiol<\/i> 2005; 96: 935\u2013941.","DOI":"10.1016\/j.amjcard.2005.05.051"},{"key":"9","doi-asserted-by":"crossref","unstructured":"9. Frenkel D, D\u2019Amato SA, Al-Kazaz M, Markowitz SM, Liu CF, Thomas G, et al. Prevalence of left atrial thrombus detection by transesophageal echocardiography: A comparison of continuous non-vitamin K antagonist oral anticoagulant versus warfarin therapy in patients undergoing catheter ablation for atrial fibrillation. <i>J Am Coll Cardiol<\/i> 2016; 2: 295\u2013303.","DOI":"10.1016\/j.jacep.2016.01.004"},{"key":"10","doi-asserted-by":"crossref","unstructured":"10. Kirchhof P, Benussi S, Kotecha D, Ahlsson A, Atar D, Casadei B, et al. 2016 ESC guidelines for the management of atrial fibrillation developed in collaboration with EACTS: The Task Force for the Management of Atrial Fibrillation of the European Society of Cardiology (ESC) developed with the special contribution of the European Heart Rhythm Association (EHRA) of the ESC endorsed by the European Stroke Organisation (ESO). <i>Europace<\/i> 2016; 18: 1609\u20131678.","DOI":"10.1093\/europace\/euw295"},{"key":"11","doi-asserted-by":"crossref","unstructured":"11. Heidbuchel H, Verhamme P, Alings M, Antz M, Diener HC, Hacke W, et al. Updated European Heart Rhythm Association practical guide on the use of non-vitamin-K antagonist anticoagulants in patients with non-valvular atrial fibrillation: Executive summary. <i>Eur Heart J<\/i>, doi:10.1093\/eurheartj\/ehw058.","DOI":"10.1093\/eurheartj\/ehw058"},{"key":"12","doi-asserted-by":"crossref","unstructured":"12. Wazni OM, Tsao HM, Chen SA, Chuang HH, Saliba W, Natale A, et al. Cardiovascular imaging in the management of atrial fibrillation. <i>J Am Coll Cardiol<\/i> 2006; 48: 2077\u20132084.","DOI":"10.1016\/j.jacc.2006.06.072"},{"key":"13","doi-asserted-by":"crossref","unstructured":"13. Rosendaal FR, Cannegieter SC, van der Meer FJ, Briet E. A method to determine the optimal intensity of oral anticoagulant therapy. <i>Thromb Haemost<\/i> 1993; 69: 236\u2013239.","DOI":"10.1055\/s-0038-1651587"},{"key":"14","doi-asserted-by":"crossref","unstructured":"14. Yamashita T, Inoue H, Okumura K, Atarashi H, Origasa H; J-Rhythm Registry Investigators. Warfarin anticoagulation intensity in Japanese nonvalvular atrial fibrillation patients: A J-RHYTHM Registry analysis. <i>J Cardiol<\/i> 2015; 65: 175\u2013177.","DOI":"10.1016\/j.jjcc.2014.07.013"},{"key":"15","doi-asserted-by":"crossref","unstructured":"15. Hart RG, Pearce LA, Aguilar MI. Meta-analysis: Antithrombotic therapy to prevent stroke in patients who have nonvalvular atrial fibrillation. <i>Ann Intern Med<\/i> 2007; 146: 857\u2013867.","DOI":"10.7326\/0003-4819-146-12-200706190-00007"},{"key":"16","doi-asserted-by":"crossref","unstructured":"16. Hori M, Matsumoto M, Tanahashi N, Momomura S, Uchiyama S, Goto S, et al. Rivaroxaban vs. warfarin in Japanese patients with atrial fibrillation: The J-ROCKET AF study. <i>Circ J<\/i> 2012; 76: 2104\u20132111.","DOI":"10.1253\/circj.CJ-12-0454"},{"key":"17","doi-asserted-by":"crossref","unstructured":"17. Mitamura H, Nagai T, Watanabe A, Takatsuki S, Okumura K. Left atrial thrombus formation and resolution during dabigatran therapy: A Japanese Heart Rhythm Society report. <i>J Arrhythm<\/i> 2015; 31: 226\u2013231.","DOI":"10.1016\/j.joa.2014.12.010"},{"key":"18","doi-asserted-by":"crossref","unstructured":"18. Zabalgoitia M, Halperin JL, Pearce LA, Blackshear JL, Asinger RW, Hart RG. Transesophageal echocardiographic correlates of clinical risk of thromboembolism in nonvalvular atrial fibrillation. <i>J Am Coll Cardiol<\/i> 1998; 31: 1622\u20131626.","DOI":"10.1016\/S0735-1097(98)00146-6"},{"key":"19","doi-asserted-by":"crossref","unstructured":"19. Shimizu H, Murakami Y, Inoue S, Ohta Y, Nakamura K, Katoh H, et al. High plasma brain natriuretic polypeptide level as a marker of risk for thromboembolism in patients with nonvalvular atrial fibrillation. <i>Stroke<\/i> 2002; 33: 1005\u20131010.","DOI":"10.1161\/hs0402.105657"},{"key":"20","doi-asserted-by":"crossref","unstructured":"20. 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