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Sievert, Horst; Bayard, Yves L (2009). Percutaneous closure of the left atrial appendage: a major step forward. JACC. Cardiovascular Interventions, 2(7), pp. 601-2. New York, N.Y.: Elsevier 10.1016/j.jcin.2009.05.013
Bayard, Yves L; Ostermayer, Stefan H; Sievert, Horst (2008). Alternatives to warfarin in atrial fibrillation: drugs and devices. Heart, 94(9), pp. 1113-6. London: BMJ Publishing Group 10.1136/hrt.2007.118844
Bayard, Yves L; Ostermayer, Stefan H; Hein, Ralph; Skowasch, Marijke; Büscheck, Franziska; Baranowski, Andreas; Heinisch, Corinna; Sievert, Horst (2007). Percutaneous devices for stroke prevention. Cardiovascular revascularization medicine, 8(3), pp. 216-25. New York, N.Y.: Elsevier
